I have been going through Imperial Japanese newspaper articles from over 80 years ago that the National Archives of Korea has recently released through its digital archive, and I came across some very unusual coverage of atomic bombs that really challenges conventional historical narratives. These papers give us a fascinating window into what kind of current event knowledge an educated newspaper-reading public in Korea (and by extension Japan) might have had during the final year of the war.
For example, in December 1944, the Keijo Nippo carried a report claiming that Nazi Germany, under Field Marshal Rundstedt, had already used an “atomic bomb.” Whether this was somehow based on an actual battle event is unclear.
Then, in May 1945, the paper ran a feature on novel weapons being developed by scientists at Keijo Imperial University (the predecessor of Seoul National University). The scientist featured, Professor Honda, was primarily an engine specialist, but he gave an extraordinary explanation of novel weapons—mentioning both rocket torpedoes and atomic bombs. His description of the atomic bomb is strikingly accurate: he explicitly states that it works by exploding the nucleus through a nuclear chain reaction, and that such a device, no bigger than a matchbox, could obliterate an entire fleet in a single stroke. He also acknowledged that Japanese scientists were in an invisible race against “enemy scientists”—clearly suggesting the United States.
This is remarkable, because Honda’s remarks reveal far more technical detail about nuclear weapons than was available to the general American public at the same time in May 1945, when the Manhattan Project was still a closely guarded secret.
One especially interesting comment from Honda is: “There was a time when atomic bombs caused a stir among the public, but before we knew it, they disappeared as mere talk of the town.” This may suggest that the December 27, 1944 report about a German atomic bomb was widely discussed in Korea before being dismissed as rumor.
So by the time the Keijo Nippo reported on the Hiroshima bombing on August 8, 1945, describing it as a “novel-type weapon,” it is very possible that educated readers in Korea already suspected that it was an atomic bomb. They may have understood that it was compact, devastating, and based on nuclear chain reactions. And while this kind of knowledge would have been clearest among the educated, newspaper-reading class, word of mouth could well have spread such ideas to the general public.
TL;DR: Imperial Japanese newspapers in Korea were already talking about atomic bombs months before Hiroshima. A December 1944 article claimed Nazi Germany had used one, and a May 1945 article quoted a Keijo Imperial University professor explaining how atomic bombs work—by exploding the nucleus with a chain reaction, compact but powerful enough to destroy an entire fleet. This was more technical detail than the American public knew at the time, and suggests that by August 1945, educated readers in Korea could have recognized Hiroshima’s destruction as the result of an atomic bomb.
[Translation]
Gyeongseong Ilbo (Keijo Nippo) December 29, 1944
Germany Uses Atomic Bomb
(Lisbon, 27th – Dōmei News Agency)
A dispatch from London reports: A German radio station announced on the 27th that the German forces under the command of Field Marshal Rundstedt are currently using atomic bombs.
According to the broadcast, in the areas where atomic bombs have been dropped, all plant and animal life has ceased to exist. Forests have been completely incinerated, vast areas have been turned into scorched earth, and anything caught in the massive blast winds is said to have been pulverized into dust.
Gyeongseong Ilbo (Keijo Nippo) May 26, 1945
Slaughtering an Entire Fleet with a Single Blast
The Emergence of Atomic Bombs is Also Possible
Under the Z-Flag, We Shall Die (Part 1): The Novel Weapons Edition
May 27 marks the 40th Navy Memorial Day. In various parts of Seoul, the Z-flag already flutters proudly, and under this symbol of our forefathers’ glorious traditions and spirit, a surge of fighting resolve is rising. The decisive battle over Okinawa is intensifying day by day, and Korea, too, is hurrying to fortify itself in body and spirit in preparation for the day it becomes a battlefield.
This year’s Navy Memorial Day carries even deeper and more intense significance for our hearts. “The fate of the Empire hangs on this battle"—this phrase has once again become a reality we now face forty years later. Our forefathers, through their victory in that one battle, left behind a brilliant history for us to inherit. Now, as the Z-flag is raised high once again, we, too, pledge under it: “We shall win this battle, resolutely and without fail.” I saw that pledge and surging fighting spirit in the laboratory of the Department of Science and Engineering at Keijo Imperial University.
Scientists, too, are fighting with their entire souls, driven by an ardent wish to complete weapons that will strike without fail. Weapons that will annihilate hundreds and thousands of incoming enemy task forces and aircraft—this is the fervent hope of the entire nation, and it now rests heavily on the shoulders of the scientists. In the foothills of Mt. Bukhan, far from the dust of the city, Professor Honda of the university’s Department of Science and Engineering continues his unseen battle with enemy scientists, devoting himself to researching special internal combustion engines. He paused his experiments to speak passionately about the spirit and aspirations of Japan’s scientists.
"Novel weapons do not appear easily," he began. "There is always a large gap between theory and reality, and we must wait for the sudden inspiration that breaks through after long and difficult thought. Once that new direction is found, the entire power of the nation must be mobilized to carry out mass production—both in quality and quantity."
On the professor’s face was a stern expression, as if reproaching the public for harboring naive hopes about novel weapons.
"The weakness of rocket artillery lies in its imprecise targeting. Right now, scientists around the world are working on how to accurately hit targets using rockets, which are notable for their high speed and simple launching mechanisms. Research aimed at improving the precision of existing weapons may appear plain compared to flashy new inventions, but it is no less important. If we can make rocket projectiles accurate, not a single one of those hateful enemy planes would make it back after flying over our seas or homeland. When considering weapons, we must think on two fronts: First, improving the quality and quantity of existing weapons; second, the appearance of completely novel weapons that catch the enemy off guard. The improvement of existing weapons can hold decisive importance. We should reflect deeply on the example of Germany, which was destroyed despite its novel weapons."
"But Japanese scientists, too, are pouring their entire bodies and souls into their efforts day and night. What might emerge from this is unpredictable. Ideas that once belonged to fantasy or theory confined to the laboratory can suddenly become real. Science has always had a history of breaking through difficulties, so I believe we can place absolute faith in the level of Japanese science."
Although Professor Honda spoke with scholarly humility, he gave a powerful explanation of the real possibility of highly accurate novel torpedoes and atomic bombs capable of annihilating an entire fleet with a single strike.
"As for torpedoes, the enemy is said to have recently developed something like a rocket torpedo. It is launched from an aircraft and flies at high speed through the air for half the distance, then rushes through the water for the rest. Because of its speed, it is believed to have features like reduced deflection from water currents—but the details are unclear. Of course, in Japan, we cannot publicly reveal these developments, but many new innovations are being steadily implemented."
"There was a time when atomic bombs caused a stir among the public, but before we knew it, they disappeared as mere talk of the town. However, scientists are continuing their research into them seriously. Theoretically, they are firmly grounded, and even in experiments, it is possible to photograph the explosion of atoms."
The article then explores the astonishing potential of the atomic bomb—a single matchbox-sized device that could blow enemy warships to pieces.
"The atomic bomb is like someone who has only been eating the flesh of a peach discovering that the seed inside contains even more incredible nourishment. Just as such discovery would completely be a food revolution, the use of atomic energy would represent a complete revolution in the way we use matter, and that could bring upheaval to the history of civilization."
"Up until now, human life has relied on three main types of energy: First, fire; second, the use of explosions to power things like guns and engines; and third, electricity for communication and power. But all of these use the electrons that orbit the outside of atoms. They do not use the real inner power of atoms—the nucleus. The atomic bomb explodes this nucleus. Future research must focus on how to achieve a chain reaction of the nuclei. That is the key. I hope people will believe in the principle that science, after long hardship, can suddenly leap forward and overcome even the most difficult obstacles."
Professor Honda thus emphasized the confident and indomitable spirit of Japan’s scientists. As Navy Memorial Day approaches, this is the fighting spirit being sent from the home front.
Gyeongseong Ilbo (Keijo Nippo) August 8, 1945
Did the Enemy Use a Novel-Type Bomb?
Small Number of B-29s Raid, Damage to Hiroshima City
Imperial Headquarters Announcement (August 7, 1945, 3:30 PM)
-
On August 6, Hiroshima City sustained considerable damage as a result of an attack by a small number of enemy B-29 aircraft.
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It appears that the enemy may have used a novel-type bomb in this attack, but the details are currently under investigation.
[Transcription]
京城日報 1944年12月29日
独、原子爆弾を使用
【リスボン二十七日同盟】ロンドン来電＝ドイツの一放送局は二十七日ルントシュテット元帥麾下の独軍が目下原子爆弾を使用している旨放送した。右放送によれば原子爆弾が投下された地域は一切の動植物が生存を停止し森林は焼きつくされ広大な地域を焦土と化し、大爆風に当ったものは誰でも粉微塵になってしまうといわれる。
京城日報 1945年5月26日
一発で全艦隊屠る
原子爆弾の出現も可能
Z旗の下に死なん（上）新兵器篇二十七日は第四十回海軍記念日である。京城の街の處々には早くもZ旗が翩翻とひるがえり父祖の築きあげた輝かしき伝統と魂に続かむとする戦意はこのZ旗の下に澎湃として沸き起った。沖縄をめぐる決戦の様相は日に日に苛烈の度を加え朝鮮もまた戦場と化する日に備え物心挙げての要塞化が急がれている。
この日に迎えようとする海軍記念日の意義はそれだけ深く強烈にわれらの胸を打つ『皇国の興廃この一戦にあり』は再び四十年後のいまわが皇国が直面した現実である。われらが父祖はこの一戦を勝利をもっていろどり輝かしき歴史をわれらに継がしめた。この日高らかに掲げられたZ旗にわれらもまた誓う『この一戦を断乎勝利へ』とこの誓いと沸る戦意を城大理工学部の研究室に見た。
科学者も精魂をつくして闘っている必生必中の兵器を完成しようとの熱願、来襲機動部隊や敵機が幾百幾千たりともこれを全滅させる兵器―この全国民の熱願はいま科学者の双肩にひっしとのしかかっている。ここ都塵離れた北漢山麓に眦決して敵科学者と見えざる戦いを続ける城大理工学部に特殊内燃機関の研究に没頭する本多教授は実験の手を休めて沸る科学者の戦意と抱負を籠め乍ら語るのだった。
『新兵器は容易に現れるものではない。理論と現実には常に大きな隔たりがあり科学者の永い苦慮を通して突如打開される霊感に俟たなければならない。次にはこの打開された新しい方向には国家の総力を挙げた量と質とへの生産の努力が展開されるのだ』
こう語り出した教授の面には国民が唯新兵器に軽い甘い気持を叱責するような厳しい表情がある。
『ロケット砲の欠点はその照準の不確実にあるが今世界の科学者は如何にしてこの高速度と簡易発射の特長を持つロケットを目的物に命中させるかを研究している。現在ある兵器を単に精度の向上を図るといった研究は奇抜な新兵器の発明よりも地味であるが決して新兵器の発明に劣るものではない。もしロケット弾の精度を決定的にするならばあの憎い敵機を海に本土に邀えて一機も無事に帰えすことはないのだ。兵器は第一に古いものの質と量の向上、第二に全く新しい敵の意表を突く兵器の出現、この二つの面から考えなければならない。古いものの質と量との向上は時に絶対的意義を持つのであって新兵器になお殪れた独逸を深く考えてみねばならない』
『しかし日本科学者も日夜その全身魂をぶちこんで努力しているから何が生れるかは予想も出来ない。全く空想或は実験室の理論であったものが突然現実化する。科学は常に窮しては打開して来た歴史であるから我が日本の科学水準には絶対期待してもよいと思う』
教授の学者らしい謙遜の言葉は必生必中の新型魚雷や精鋭よく一発で全艦隊を屠る原子爆弾の可能性を力強く説くのだった。
『魚雷ではロケット魚雷というものを最近敵で作ったらしい。これは飛行機から放たれた魚雷が行程の半分を高速で飛行し、後の半分を水中で突進するが、速度の大、水流による偏流の減少などの特長があると思われるが、その詳細は不明だ。日本では勿論公表出来ないが新しい工夫はどしどし実施されている。原子爆弾は一時国民に騒がれたが何時の間にか一時の街の話題と消えさったようだ。しかし科学者は之についても真剣に研究を進めている。理論的には厳たる事実であり実験的には原子の爆発を確実に写真に撮ることさえ出来るのだ』
マッチ箱一つで敵艦船を吹き飛ばすというあまりに不思議なこの原子爆弾の威力は掘り下げられる。
『原子爆弾は桃の肉ばかり喰っていた人間が種子の中にもっとすばらしい栄養を発見したようなものだ。これは全く食物の革命だろう。この通り原子エネルギーの利用は全く物質利用の革命であり文明史の動転を意味するほどのものだ。要するに今までの人間生活は三つの面を出でない「火」の利用がその一つ。鉄砲や発動機等を成功させた「爆発」の利用がその二。通信や動力などに活用せられた電気がその三つ。ところが之は総て物質原子の外側を廻る「電子」の力であって原子の真の中味である「核」の力ではない。原子爆弾はこの核を爆発させればよいのであって、今後の研究は核の連鎖反応を如何にして実現するかにあると言ってもよいと思う。科学は長い苦心の後突如飛躍的に難関を打開するという命題には大いに期待してもらいたい』
教授は自身満々たる科学者の精神を強調するのだった。海軍記念日を迎えこれは銃後へ贈る闘魂である。
京城日報 1945年8月8日
敵、新型爆弾を使用か
B29少数来襲、広島市に被害大本営発表（昭和二十年八月七日十五時三十分）
一、昨八月六日広島市は敵B29少数機の攻撃に依り相当の被害を生じたり。
二、敵は右攻撃に新型爆弾を使用せるものの如きも詳細目下調査中なり。
Source: National Library of Korea – Digital Newspaper Archive
