The Day Japan’s Newest Fighter Arrived and There Was No One Left to Fly It

At approximately 0650 on 19 March 1945, a reconnaissance aircraft over the Bango Channel reported an American carrier strike inbound toward the naval base at Cur. 54 fighters took off from Matsuyama airfield on Shikoku to meet it. The aircraft were Kawanishi N1K2J Shiden Kai 1990 horsepower 420 mm cannon in the wings 369 m an hour.

A wing fitted with a device no other air force in the world had put into service. A set of combat flaps that deployed themselves automatically without the pilot touching anything. The men flying them were the best remaining in the Japanese Empire. And that is not a figure of speech. They had been collected by hand over the preceding three months, pulled individually out of every surviving unit in the home islands, because assembling one good fighter group now required stripping every other fighter group in the country.

The engagement lasted roughly an hour. The Japanese pilots claimed more than 50 American aircraft destroyed. American records account for a small fraction of that figure. The unit lost 16 aircraft and 13 pilots. Both sides went home believing they had won something. Neither of them had because the arithmetic that mattered was not in the claim sheets.

There was exactly one unit in Japan flying the Shiden Kai at that standard. There would never be a second one. The factories would deliver over 400 of these aircraft, and the K84 Hayate would be built in numbers exceeding 3,500, and it would change nothing at all. Japan had finally built a fighter that could meet the American Navy on even terms.

It arrived in a country that would never again put a trained fighter force into the air. That is the whole subject of this account and it is worth stating in the bluntest possible terms before the evidence starts because the conventional version of the Pacific Air War gets it backwards. The conventional version says Japan lost the air war because its aircraft became obsolete.

The Zero was outclassed, the story goes, and Japan could not build a replacement in time. Japan built the replacement. It built several The Shiden Kai could outturn a Hellcat and carried twice its cannon armament. The Nakajima Maki 84 Hayate, tested by the Americans after the war on high octane fuel, reached 427 mph, faster than the P51D Mustang it was measured against, the Mitsubishi J2M Raiden climbed faster than anything the Americans had flying from a carrier deck. The machines arrived.

They arrived late in insufficient numbers, plagued by engine and manufacturing problems. But they arrived. What did not arrive was the men. By the time the Shidden Kai reached squadron service, the Imperial Japanese Navy’s fighter pilot corps had been dead for 8 months. not depleted, not tired, dead in the specific sense that the men who could have flown these aircraft to their specification were at the bottom of the Philippine Sea, and the men available to replace them had between 30 and 100 hours in the air.

Hold the two halves of that sentence apart, because everything else follows from the gap between them. A factory can double its output of airframes in a year if it is given materials and labor. Nakajima did it. Kawanishi did it. Aircraft production in Japan peaked in 1944 in the middle of a strategic bombing campaign which is a genuinely remarkable industrial achievement and is usually reported as evidence of desperation rather than capability.

A flight school cannot do the same thing because its output is limited by instructors, by airfields, by flying hours, and by fuel, and because the product takes 2 years to make and cannot be rushed without killing it in training. There is no equivalent of a second shift. There is no equivalent of a subcontractor.

An aircraft is not a weapon. An aircraft is one half of a weapon and the other half takes 2 years to make and cannot be produced by a factory. That is the thing Japan understood too late and America understood in 1940. And the gap between those two dates is the entire story of what happened over the Pacific between 1943 and 1945.

But this did not begin over Cur. It began in the 1930s in a selection room with a decision that everyone involved regarded at the time as an unambiguous strength. The Imperial Japanese Navy’s pilot training program was the most selective in the world and it was selective by design and by pride. The Yokerin system, the naval flight reserve enlisted trainee program, took applications from across Japan and refused almost all of them.

In one representative pre-war intake, roughly 1,500 young men applied and about 70 were accepted. Other classes ran harder still. The wash out rate among those accepted remained brutal all the way through. What came out the other end was extraordinary. A Japanese naval fighter pilot of 1941 had something on the order of 700 flight hours before he saw an enemy.

And a substantial number of them had combat experience in China going back to 1937. They could shoot. They could navigate over open ocean without radio aids in singleseat aircraft and find a moving carrier at the end of it. In the opening 6 months of the Pacific War, they were by any honest measure the finest carrier aviators on Earth. Now count them.

At the outbreak of war, Japan had roughly 900 fully qualified carrier pilots, 900 in total for the entire Navy. And the annual output of the system that produced them was around 100 pilots a year. That is the decision and nobody wrote it down as a decision. It was simply what quality meant. A program that refuses 95% of applicants and trains the remainder for 2 years produces superb pilots and produces almost none of them.

Japan built a rapier and made no arrangements to build a second one. There is a second structural feature of the Japanese system that made the ceiling lower still and it is almost never mentioned. Japan did not have one air force. It had two and they did not speak to each other. The Imperial Japanese Navy and the Imperial Japanese Army ran entirely separate aviation branches with separate aircraft, separate engines, separate factories, separate procurement, separate doctrine, and separate flight schools. An army pilot could not be

transferred to a naval unit in any practical sense. Army fighters used different weapons, different radios where radios existed at all, and different tactical formations. The two services competed for the same aluminium, the same engine production capacity, and the same aviation fuel. So the 100 odd naval pilots a year were not 100 out of a national total.

They were 100 out of a naval total produced by a naval pipeline that could not be reinforced from the army pipeline. No matter how desperate the situation became, Japan did not have one shortage. It had two running in parallel, neither of which could relieve the other, set against that the American position in 1939, which was frankly worse.

The United States Navy was producing a few hundred aviators a year, and its standards, while serious, were nothing like Japanese selection. On the eve of the war, the average American naval aviator was less experienced, less well-trained in deflection shooting and flying an inferior aircraft. The difference is what each country did about the shape of its own pipeline.

And the American answer began before the shooting did. In 1939, the civilian pilot training program began putting college students through elementary flight instruction at civilian schools across the country. In 1940 and 1941, the Naval Aviation Cadet Program expanded on a scale that had no precedent.

Enormous new training bases went up from nothing. Corpus Christi in Texas, commissioned in 1941, became the largest naval air training station in the world. Jacksonville, Pensacola, expanded past recognition. Whole civilian airfields were absorbed into the primary training system. The numbers tell it better than any description. In 1939, the United States Navy trained a few hundred aviators.

In 1943, it trained more than 20,000. 20,000 naval aviators in one year against a Japanese program producing a few hundred and structurally incapable of producing more because the instructors required to expand it were the same men who were flying combat operations in the Solomons. None of that was recorded as a war-winning move at the time.

It was infrastructure. It was money spent on airfields in Texas while Japanese carriers were sinking American battleships. And it is the single reason that when Japan’s best fighter finally reached a runway in 1945, there was nobody standing next to it who could fly it properly. To understand what those 900 men were capable of, look at what they were flying and what they did with it.

The Mitsubishi A6M0 entered service in 1940. It weighed a little over 5,000 lb empty. It was built light in a way no other combat aircraft of its generation was built light. No pilot armor, no self-sealing fuel tanks, lightning holes drilled through structural members. A new aluminium alloy developed specifically to shave weight out of the spar.

The result was a fighter with a range of over 1,900 mi with a drop tank, a climb rate no allied fighter could match at low altitude, and a turning circle so tight that Allied pilots who attempted to follow one through a turn generally did not survive the attempt. two 20 mm cannon and two machine guns in the hands of a 700h hour veteran with four years of combat behind him.

It was the most dangerous aircraft in the sky in 1941 and the record is unambiguous. Over the Philippines, over Malaya, over Darwin, over Salon, Japanese naval fighter units operated with something close to impunity. Look at what that combination did. In the first 6 months over the Philippines in December 1941, Japanese naval fighters flew from Formosa to Luzon and back, a distance nobody in American planning believed a single engine fighter could cover and caught the American Air Force on the ground. over Sylon in April 1942.

Carrier air groups operated against British bases at a range that had been assessed as impossible. Over Darwin, over Java, over the Coral Sea, the pattern held. The Imperial Japanese Army had its own line and its own successes. The Key 43 Hayabusa, lighter still, and later the Key 44 Interceptor. But the machine was never the main thing, and the Japanese naval staff knew it better than anyone.

The Zer’s performance was a function of an airframe that punished mistakes absolutely. It had no armor, and it burned. It could not dive with a Wildcat without risking structural failure at high speed. Its controls stiffened badly above 300 m an hour. Flown by a novice, it was a fragile aircraft with a short combat life expectancy. Flown by a man with 700 hours, it was untouchable.

And there was one further thing the Japanese pilot did not have, which cost more over 3 years than any performance figure on any specification sheet. He had no realistic prospect of being picked up. Japan operated no meaningful air sea rescue organization. There were no dedicated rescue aircraft on station, no submarines assigned to lifeguard duty beneath the flight paths, no standing arrangement to search for a man in the water.

Many Japanese pilots did not carry parachutes at all. partly weight, partly a service culture that regarded the equipment as an admission, and those who went into the sea over the Solomons or the Central Pacific generally stayed there. The Americans built the opposite. By 1944, American strike missions were flown with submarines stationed on the withdrawal route specifically to surface and collect downed air crew with long range flying boats orbiting for the same purpose and with destroyers detached to search.

Thousands of American airmen were recovered from the water over the course of the war and a substantial number of them flew again. Every recovered American pilot was a trained man returned to the pool with combat experience added. Every unreovered Japanese pilot was a subtraction from a pool that had no inflow worth the name.

That is what the Japanese advantage actually consisted of in 1941 and 1942. not superior technology as such, but a small population of exceptionally trained men flying an aircraft that rewarded exceptional training and punished everything else. Japan had built its entire airarm around the assumption that this population would be maintained.

And here is the doctrine that made maintaining it impossible. A Japanese combat pilot stayed at the front. There was no tour length. There was no rotation home. A veteran flew operations continuously from base to base as the front moved until he was killed in vided or the war ended. Excellence was expected to be spent, not banked.

There was in consequence almost no instructor cadre. The men best qualified to teach the next generation of Japanese fighter pilots were all in the Solomons flying missions and every week a few more of them did not come back. Each death removed a pilot from the front and silently removed a teacher from a school that did not exist yet. The Americans did the opposite and the difference is the whole war.

The American deficit in 1942 was real and it was measurable and it is worth putting numbers on it before describing how it was closed. The standard American carrier fighter at the start of the war was the Grman F4F Wildcat. It was slower than a Zero at every altitude below 20,000 ft. It climbed worse.

It could not turn with one, and no competent instructor pretended otherwise. It was a barrel-shaped, handc cranked, unglamorous airplane that looked exactly as agricultural as it was. American pilots reaching the fleet in 1942 typically had somewhere in the region of 300 flight hours against a Japanese opponent with 700 and often actual combat experience.

American deflection gunnery training was better than most navies and still not good enough. In the early carrier actions, American fighter pilots frequently could not hit what they were shooting at. So the deficit was worse aircraft, less experienced men, fewer combat hours. In 1942, the Japanese were better at this than the Americans were.

And the loss exchange rates through the first year of the war reflect it. What the Wildcat had was two things that did not appear in any performance comparison. It had armor plate behind the pilot’s seat, and it had self-sealing fuel tanks. Those two features cost weight and the weight is exactly why the aircraft was slower.

Grumman had accepted a measurably inferior fighter in exchange for a pilot who survived being hit. That is the entire American philosophy in one design choice. And it points directly at the decision that decided the air war. Because a pilot who survives being shot down is not a loss. He is a pilot who has just acquired combat experience.

There was a tactical dimension to the same problem and it is worth a moment because it shows how American knowledge traveled. Japanese fighter units flew in the Shotaai. A three aircraft element built around a leader whose wingmen supported him. It was flexible. It suited highly skilled individual pilots and it depended on all three men being very good.

American units moved to a two aircraft section and a four aircraft division and then to a specific mutual support maneuver worked out on paper before it was ever flown in combat. Two aircraft turning toward each other in a repeating scissors so that each covered the other’s tail, giving up the individual turning contest entirely in exchange for a formation that a Zero could not attack safely from behind.

It was designed by a man who had never fought a Zero from intelligence reports about an aircraft he had not seen using matchsticks on a table. It worked the first time it was tried in combat and then it was taught systematically to every fighter pilot the United States Navy produced for the rest of the war. Now the decision itself and it was administrative rather than technical which is why it almost never appears in the histories of Pacific air combat.

The United States Navy rotated its combat pilots out of the front line. A fighter pilot flew a combat tour and was then pulled out and sent home. Not to rest primarily, though that mattered. He was sent home to teach. Consider what that produces over 3 years. Every American squadron that fought at Coral Sea, Midway, and Guadal Canal became within months a source of instructors distributed through an enormously expanded training system.

John Thack, who invented the defensive weave that solved the Zero, spent the middle of the war passing on what he had learned rather than flying combat missions. Men who had personally fought Japanese veterans stood in front of classrooms in Florida and Texas and told 19year-olds precisely what a zero would do and precisely what to do about it.

The knowledge compounded. Each cohort of American pilots entered combat knowing what the previous cohort had learned the hard way. And each cohort then returned to teach the next. Japanese knowledge did not compound. It died with the man who held it. Run those two systems forward from 1942 and they do not converge.

They diverge at an accelerating rate. By 1944, an American carrier pilot arriving at the fleet had 5 to 600 hours, gunnery training from men who had shot down zeros, and an aircraft that would forgive him. It is worth being precise about how large the pipeline had become, because the figure is difficult to believe from a standing start of a few hundred a year.

By 1943, the United States was operating an integrated national training system, civilian contract schools for elementary instruction, then primary, basic, and advanced military stages, then operational training in the actual combat type, then a work up with the squadron before deployment. A pilot passed through several distinct institutions with several distinct staffs before he ever saw a carrier deck.

The total American output of military pilots across the war ran to well over 200,000 men. Japan’s total across the same period was a small fraction of that. And by 1944, its marginal output was pilots who had never fired their guns at a towed target. That aircraft is the last piece and it was designed around exactly this insight.

The Grumman F6F Hellcat was not built to be the highest performing fighter that American industry could produce. It was built to be flyable and survivable and lethal in the hands of an average pilot with average hours. It was heavy, stable, hard to stall unexpectedly, wellarmored, and it carried six heavy machine guns that did not require a marksman.

Japan built an aircraft that made a great pilot unbeatable. America built an aircraft that made an ordinary pilot dangerous and then built ordinary pilots by the tens of thousands. The bill for the Japanese system came due in the Solomon Islands, and it came due slowly enough that nobody in Tokyo registered it as a catastrophe until it was finished.

Guadal Canal was not a decisive battle in the air. It was an attrition campaign, which is worse. And it ran from August 1942 into February 1943. Japanese fighter units flew from Rabal to Guadal Canal and back. A round trip of something over a thousand miles at the extreme edge of the Zer’s range with perhaps 15 minutes of combat available at the far end.

A pilot who took damage or lost his formation or simply miscalculated his fuel was gone over open water with nobody to find him. American pilots shot down over Guadal Canal often landed among their own troops and flew again the following week. Japanese pilots shot down over Guadal Canal were in almost every case permanently subtracted.

Through the second half of 1942 and into 1943, the Imperial Japanese Navy fed its irreplaceable veterans into that geography at a rate of a few every day. In April 1943, Admiral Yamamoto launched Operation IGO, a concentrated air offensive intended to break the Allied position in the Solomons once and for all, and committed carrier air groups to it, flying from land bases over the same distances against the same attrition.

IGO claimed results that were reported enthusiastically and were largely imaginary. What it actually accomplished was the destruction of a significant portion of the carrier air groups Japan had spent a year rebuilding. Raball is where the accounting becomes visible. Through 1943, the Great Base in New Britain absorbed replacement air groupoups and consumed them cycle after cycle.

units arrived at establishment strength, flew for a few weeks, and were withdrawn at a fraction of it. When the Americans finally neutralized the base by air in early 1944, they were finishing something that had already largely finished itself. By late 1943, the pre-war pilot corps was effectively gone. The names that had dominated the first year of the war were mostly dead and the survivors were flying continuously because there was no mechanism to take them out of the line.

That is the revealing part and it is why this campaign belongs in this account rather than the aircraft versus aircraft comparisons that usually fill it. Japanese fighter design in 1943 was still competitive. Japanese fighter pilots in 1943 were no longer competitive and the training system could not fix it because fixing it would have required instructors who were dead and flight hours that required fuel.

Japan was already rationing. The replacement pilots that Japan sent to the Maranas in June 1944 had in many cases two or three months of training. Some carrier pilots reached the fleet with under a 100 hours total. On 19th June 1944, off the Maranas, Admiral Ozawa launched them in four raids against the American fleet.

Something on the order of 370 aircraft over the course of the day. The disparity was not only in flying hours. It was in the whole system around the pilot. American ships tracked the incoming raids on radar from more than a 100 miles out. Fighter direction officers vetoed intercepting Hellcats onto them by radio with altitude and bearing.

The Japanese formations, by contrast, were navigating by dead reckoning toward a reported position at the far end of a long overwater flight with many of their pilots on their first operational mission. They were met by Hellcats flown by men with 500 hours, vetored by radar, coordinated by fighter direction officers over ships firing shells with proximity fuses.

The Japanese formations were broken up before they reached their targets. By the end of the day, Japan had lost the overwhelming majority of the aircraft committed along with three carriers. The American air crews had a phrase for the day that has stuck to it ever since. And it was not bravado.

It described what the interceptions actually looked like from a Hellcat cockpit. Formations that did not maneuver correctly, pilots who flew straight while being fired on, and aircraft that came apart at the first burst because nobody aboard had been taught the evasive turn that would have prevented it. That was not a battle. It was the audit.

Eight months of a national training program destroyed between breakfast and dinner by an opponent whose loss rate was so low that the American air crews joked about it while it was happening. It took 8 hours to get every name and number in this segment right. The afteraction reports, the loss tables, the squadron rosters.

If that work is worth something to you, hit the like button. It’s the only signal that tells us to keep doing it this way instead of the fast way. What Japan did in the 12 months after the Maranas is the part of this story that almost never gets told. And it is the reason the title of this account is not a figure of speech.

Japan understood the problem precisely. The staff papers are unambiguous. The Navy had aircraft coming out of factories and no one to put in them. And every possible solution was tried and there were only three. The first was to shorten training. Pilot flight hours before operational assignment fell from roughly 700 in 1941 to under 300 by 1944 and in the final year to figures in the low hundreds and in some units below that. The syllabus was cut to the bone.

Navigation training went first, then gunnery, then formation work until what remained was takeoff, straight flight, and landing. That was not a solution. It was a way of converting the pilot shortage into a pilot casualty rate and it did so immediately. Training accidents rose steeply. Units began losing aircraft on ferry flights in weather on landing and it collided with the second constraint which was fuel.

Training hours require aviation gasoline. And by 1944, the American submarine campaign had cut the tanker route from the southern oil fields to a trickle. Aviation fuel was rationed to operational units first and training units last. By 1945, Japan was distilling substitute fuel from pine roots in a national program that mobilized school children to dig up stumps and the resulting product ruined engines.

So a country that needed more flight hours than ever before had less fuel than ever before to fly them. And the aircraft it was building required more power and better fuel than the aircraft they replaced. The Homare engine that powered both the Shiden Kai and the K84 was designed around high octane fuel and precision manufacturing.

It got lowgrade substitute fuel and wartime tolerances and in service it frequently would not deliver anything close to its rated output. The manufacturing side compounded it. The Homare was a complex high output 18 cylinder engine that demanded tight tolerances and good materials. By 1944, Japanese factories were running on substitute alloys.

worn tooling and a workforce that increasingly consisted of conscripted students and women with no engineering background because the skilled men had been called up. Serviceability rates on key 84 units in the field were frequently dismal. A large proportion of any squadron’s aircraft unavailable on a given morning for engine hydraulic or landing gear faults.

An air force with a shortage of pilots was now also unable to keep the aircraft. Those pilots did not exist to fly in flying condition. The second answer was to build the missing skill into the airframe. And this is the most remarkable engineering response of the late Pacific War. The Shiden Kai’s automatic combat flaps were a mercuryfilled monometer connected to the flap actuation system.

It sensed dynamic pressure and gloing, and it lowered and raised the flaps by itself in a turning fight without pilot input. A veteran fighter pilot manages his flaps by feel of a maneuvering engagement while doing six other things. Kawanishi had automated that judgment. Read that as what it was.

An aircraft manufacturer had looked at a national shortage of experienced pilots and had attempted to build the experience into the wing. It was clever. It worked. And it arrived years after the men it was designed to substitute for had died. And the aircraft the fuel was being denied to were the ones that needed it most.

The Zero had been designed around the fuel and manufacturing standards of 1939 and would run adequately on what Japan had left. The Shiden Kai and the K84 were designed around a high output engine at the limit of Japanese engineering practice and a high output engine on bad fuel is not a slightly slower aircraft.

It is an aircraft that detonates, overheats, loses power at altitude, and needs an engine change after a fraction of its rated life. Japan’s newest fighters were, in the most literal sense, the ones least able to operate on what Japan had. The third answer was concentration, and it produced the 343rd. In December 1944, Captain Minoru Gender, the officer who had helped plan the attack on Pearl Harbor, was given authority to form a single fighter group to a standard Japan could no longer meet.

Generally, he was allowed to take pilots from other units. He took the survivors, instructors, test pilots, veterans pulled out of units that were then left weaker for it. He equipped the group with the Shiden Kai. He attached a dedicated reconnaissance unit flying the fast so that his fighters would be warned and positioned rather than scrambled blind.

It was in every respect the correct way to fight the war Japan was now in. It was also an admission written in the order of battle. Building one elite fighter group in December 1944 required stripping the rest of the empire, which means that by December 1944, the rest of the empire no longer had enough to strip.

On 19 March 1945, that group went up and the result is the only fair test anybody ever ran. Task Force 58 had come north to hit the airfields and the naval base at Curé in the inland sea ahead of the Okinawa landings. It was the largest carrier force ever assembled, 16 carriers in four task groups with air groups totaling well over a thousand aircraft.

The strikes launched before dawn on 19th March. The targets were the remaining warships at Curé, including Yamato and the airfields across Shikoku and Kyushu from which Japanese aircraft would otherwise contest Okinawa. The 343rd was warned. That was Gender’s reconnaissance arrangement working exactly as designed.

As found the inbound formations early, and the group had time to take off, form up, and climb to an altitude of advantage. Rather than being caught on the runway or clawing for height underneath the attack, 54 Shiden Kai went up in three squadrons from Matsuyama. The plan was orthodox and correct. Hold the height advantage, come down through the escort, hit the strike aircraft.

Gender’s three squadrons each had a distinct assignment rather than a common one. Two were tasked to engage the American escort fighters and hold them, and the third was to go through the gap and reach the strike aircraft, a division of labor that required the group to fight as a formation rather than as a collection of individual dualists, and that would have been impossible with the pilots most Japanese units had by that date.

The engagement that followed was the most competitive air battle Japan fought in the last year of the war. The Shiden Kai was at last a fighter that did not have to be flown around its own weaknesses. It could take hits. It had armor and self-sealing tanks which the Zero never had. Its 420 mm cannon destroyed aircraft rather than damaging them.

and it could turn hard at speeds where Azer’s controls had long since gone solid with the flaps managing themselves. It also had a radio that worked. That sounds trivial, and it is not. Japanese fighter radios through most of the war were so unreliable that many pilots removed the sets to save weight and communicated by hand signals and aircraft movement which made coordinated formation tactics nearly impossible above a small unit.

The 343rd was equipped and drilled to fight by radio and on 19th March it did. American pilots reported an opponent that behaved differently from everything they had faced over Japan in the preceding months. It stayed and fought. It made head-on passes. It did not break away when it should have. Japanese claims for the day ran to more than 50 American aircraft.

Gender’s headquarters published the figure and it was reported nationally and it was one of the very few pieces of genuinely encouraging news the Japanese public received that spring. American loss records for the fighter combat over Shikoku that morning account for something on the order of a dozen aircraft.

That gap is not fraud. It is what always happens when several pilots fire at the same target in a large, fast, confused engagement, and each honestly reports what he saw. American claims from the same period were inflated by similar factors. The point is not the arithmetic of the claims.

The point is what the 343rd actually lost. 16 aircraft, 13 pilots. 13 pilots out of a group that had been assembled by stripping every fighter unit in the home islands. 13 men who could not be replaced by the training system, could not be replaced by other units and could not be replaced by aircraft production because aircraft production was not the constraint and had not been the constraint since 1943.

Meanwhile, across the same three days, Task Force 58 flew thousands of sorties and lost aircraft it replaced from stores. Flown by pilots it replaced from a pipeline still running at full capacity in Texas and Florida. The 343rd went on operating. It fought over Okinawa. It fought over Kyushu. It remained until the surrender the most effective fighter unit Japan possessed.

and it never again reached the strength it had on the morning of 19 March. That is the result of the only fair test. Give Japan a competitive aircraft and its best surviving pilots and warning and altitude and a properly planned interception. And the outcome is a creditable air battle that costs Japan 13 irreplaceable men and costs the United States a morning’s attrition it had budgeted for.

The aircraft had arrived. It made no difference because by March 1945, the difference an aircraft could make had shrunk to almost nothing. What happens in the next 12 minutes is the part most documentaries skip entirely. If you want the rest of this war told the same way from the records, not the legends, subscribe before it starts.

Now count what Japan had actually lost because the aircraft numbers make it look like the opposite of what it was. The Nakajima Key 84 Hayateate was built in numbers exceeding 3,500 airframes. It was the most produced Japanese fighter of the last 2 years of the war and by several measures the best.

Postwar, American engineers took a captured K84, put high octane American fuel in it, gave it proper maintenance and quality American spark plugs, and recorded 427 mph, a figure that beat the P51D it was flown against. That test is the most damning document in this entire account. And it does not say what people usually think it says. It does not prove the key 84 was a war winner Japan failed to appreciate.

It proves the opposite, that the airframe was never the limiting factor. Given fuel Japan did not have, manufacturing tolerances Japan could no longer hold, maintenance Japan could no longer perform, and a pilot Japan could no longer train, the aircraft was excellent. Every one of those four conditions was a supply problem, and three of them were consequences of the same submarine campaign that had already strangled the oil.

There is a wider figure that puts the whole aircraft production argument to rest. Japan built well over 60,000 aircraft during the war. The United States built more than 300,000. But the more revealing comparison is not the airframes at all. It is that Japan trained on the order of tens of thousands of pilots across the entire war while the United States trained more than a quarter of a million.

Aircraft production was Japan’s smaller failure by a wide margin and it is the one that gets all the attention. The Shiden Kai reached squadron service in numbers around 400. The J2M Raiden, designed as a bomber interceptor and desperately needed once the B-29s arrived, was built in numbers around 600 and spent much of its career grounded by engine and fuel problems.

The Mitsubishi A7M Repu, the aircraft actually intended to replace the Zero, ordered in 1942, never entered service at all. So the picture in 1945 is a country with fighter aircraft in its inventory that it cannot fuel, cannot maintain and cannot crew. And that is the condition in which the last doctrinal decision of the Japanese war was taken.

If the constraint is trained pilots and the pilot cannot be trained to fight and return, then the only remaining use for an aircraft is a mission that requires no return. The organized kamicazi campaign began off Samar in October 1944 and became by the Okinawa campaign the principal Japanese air effort. Follow the logic honestly because it is not madness and it is not primarily fanaticism.

It is the end point of an airarm that has aircraft and no air crew. A conventional attack requires navigation, formation flying, weapons delivery, evasion, and a return flight. Hundreds of hours of training. A one-way mission requires takeoff, straight flight, and a dive. It is the only sorty a 100hour pilot can complete with any prospect of achieving something.

Japan reached that conclusion because it had run out of the one thing it had never built a factory for. Now, the American ledger. And 19 March 1945 was one of the worst days the United States Navy had in the entire war, which is the part of this story most accounts leave out entirely. While the 343rd was fighting over Shikoku, a single Japanese aircraft came in low out of cloud and put two bombs into the carrier US Franklin operating some 50 mi off the coast.

Franklin had a fully armed and fueled strike ranged on deck. The bombs detonated among it. What followed was hours of secondary explosions as her own ordinance cooked off. More than 700 of her crew were killed and several hundred more wounded. It remains the heaviest loss of life suffered by any United States warship that survived the war.

Franklin was saved by her damage control parties and towed clear, listing 13°, and eventually made it back to New York under her own power. Aboard Franklin, men were trapped below in compartments cut off by fire, and the ship went dead in the water within about 50 miles of the Japanese coast. A cruiser closed and took her under tow while she was still exploding.

That she was not abandoned is one of the more remarkable damage control performances of the war, and it had nothing whatever to do with fighter aircraft. The same day, a bomb hit the carrier US Wasp and killed just over a 100 men. More than 800 American sailors died on 19 March 1945. Not to the best fighter Japan ever built, flown by the best pilots it had left, but to a handful of individual aircraft that got through.

That contrast is the ledger, and it is worth sitting with. The 343rd’s 54 superb fighters flown superbly achieved a creditable air battle. Two aircraft nobody remembers achieved 800 dead. Lay the ark out by date because the shape only appears in sequence. 1937. The Imperial Japanese Navy’s flight training program accepts a small fraction of applicants and turns out roughly a 100 pilots a year.

Japanese naval aviators begin accumulating combat experience over China. 1939, the United States launches the civilian pilot training program, putting college students through elementary instruction at civilian schools. 1940, the Mitsubishi A6M0 enters service. The Naval Aviation Cadet program begins expanding on an unprecedented scale.

1941, Corpus Christi is commissioned and becomes the largest naval air training station in the world. Japan enters the war with roughly 900 fully qualified carrier pilots, each with about 700 flight hours. August 1942 to February 1943, the Solomon’s attrition campaign. Japanese fighter units fly a thousand-mile round trip from Rabal.

Losses over water are permanent. April 1943, Operation IGO commits rebuilt carrier air groupoups to landbased operations in the Solomons. Reported results are largely imaginary. The veteran cadre is effectively finished. 1943, the United States Navy trains more than 20,000 aviators in a single year. The F6F Hellcat enters squadron service.

1944, Japanese pre-operational flight hours have fallen from 700 to under 300 and continue falling. Aviation fuel is rationed away from training units. 19th June 1944 off the Maranas. Roughly 370 Japanese aircraft are committed in four raids and the overwhelming majority are destroyed in a single day along with three carriers.

Late 1944, the N1K2 J Shiden Kai reaches service with automatic combat flaps. The K84 Hayate enters mass production. October 1944, the organized kamicazi campaign begins off Samar. December 1944, Captain Minoru Gender forms the 343rd Kokatai by stripping surviving veterans from units across the home islands. 1945.

Substitute aviation fuel is distilled from pine roots. Omari engines fail to reach rated output on it. 19 March 1945, 54 Shiden Kai intercept task force 58 strikes over Shikoku. The 343rd claims more than 50. American records account for around a dozen. The 343rd loses 16 aircraft and 13 pilots. The same morning, US Franklin is hit and loses more than 700 men, and US Wasp loses just over a 100.

Postwar a captured key 84 on American fuel records 427 m an hour. 1978 a shiden kai is recovered from the seabed off a heime 33 years after it went into the water. Four things emptied the cockpits of Japan’s best fighters and not one of them is an aircraft. The first was selection without capacity.

Japan built the most rigorous flight training program in the world and gave it the throughput of a craft workshop. A 100 pilots a year is a superb standard and a fatal ceiling and the ceiling was invisible for as long as nobody was shooting. A program designed to produce excellence had no mechanism to produce volume and could not acquire one after the shooting started because expansion requires instructors and the instructors were all at the front.

None of the four is a technology. Not one of them could have been fixed by a better aircraft. and Japan’s engineers who produced the Shiden Kai, the K84. The Raiden and the Repu program under bombing with substitute alloys and a conscripted workforce were not the part of the Japanese war effort that failed. The second was the absence of rotation.

This is the decisive administrative fact of the Pacific Air War and it appears in almost no popular account of it. American pilots flew a tour and went home to teach. Japanese pilots flew until they died. One system compounded its knowledge across cohorts and the other buried it. Over 3 years, the effect is not additive, but exponential, and it explains why the gap between American and Japanese air crew quality widened at exactly the moment Japanese aircraft quality was catching up.

The third was fuel. Everything downstream of the tanker route failed together. Training hours require gasoline. The Homare engine required high octane gasoline. The submarine campaign cut both off at the source. A country trying to train new pilots faster while distilling its aviation fuel from tree stumps is not going to train new pilots faster.

The fourth was designing for the pilot you have. Grman built the Hellcat around an average man with average hours, accepting a lower performance ceiling to get forgiveness, armor, and firepower. And then America produced average men by the tens of thousands. Japan built aircraft that repaid virtuosity.

And by the time Kawanishi tried to reverse that with automatic combat flaps, the virtuosos were dead and the flaps had nobody to help. Strip away the performance tables, the comparison charts and the flag planting and what remains is a single reversal. Japan spent the first year of the war with the best air crew in the world and an aircraft industry that could not quite match its enemy.

and it spent the last year of the war with an aircraft industry that had finally matched its enemy and no air crew at all. The two halves of the weapon arrived in the wrong order, four years apart, and at no point did Japan hold both of them at once. And folded inside that reversal was a second one, quieter that nobody noticed until it was already finished.

The automatic combat flap was an attempt to move a pilot’s judgment into the machine. It worked. It was the first serious attempt by any air force to substitute engineering for training. And it is the direct ancestor of a great deal of what a modern combat aircraft does for the man sitting in it. But once a country accepts that principle that the machine can carry what the pilot lacks, it has started down a road with a fixed destination.

If the wing can manage its own flaps, what else can be removed from the pilot’s list? Navigation if the mission is short. Gunnery if the aircraft is the weapon. The return flight if there is no return flight. The kamicazi was not a departure from Japanese aeronautical thinking in 1944. It was the same substitution carried to its end.

Kawanishi asked how much of a pilot’s skill could be built into the aircraft and the naval general staff working the same problem from the other direction arrived at the answer. All of it except the takeoff. One of those answers is in every fighter cockpit flying today. The other one killed several thousand teenagers off Okinawa.

They came out of the same shortage in the same year in the same country. Minor Genda survived the war. He went on to command the postwar Japan Air Self-Defense Force and to spend a long career in politics. and he lived until 1989, long enough to see the aircraft he had commanded become a museum piece and the doctrine he had helped write become a subject for historians.

In 1978, a fishing operation off the coast of Aime brought up a Shiden Kai from the seabed. It had gone into the water in July 1945 after an engagement over the Bango Channel and it had been sitting there for 33 years. It was raised, preserved, and put in a small exhibition hall in the town of Aan on the coast of Shikoku, a short distance from the airfields these aircraft flew from.

It is the only Shiden Kai in Japan. It sits under a roof in a fishing town with its cannon ports empty and its flaps exactly where the sea left them. If you want to understand how America actually won its war, not the version in the highlight reels, subscribe. There’s a new one every few days.