Zero fighters (Mitsubishi A6M2s) were busy with dogfighting exercises and target practice. Three-seat attack bombers (Nakajima B5N2s) had the exercise of level bombing in formation at the height of 3,000 meters and of torpedo bombing at extremely low level.

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As a navy lieutenant and a company commander, I trained my men–not knowing what we were training for–paying the greatest attention to their achievement in precision bombing. My company had various duties in our training, but when we attacked and bombed ships, even if we were bombing for five hours, and our bombs did not hit the ships, our training was considered worthless and we would have to bomb more. When I think of the hard training of the torpedo planes that flew every day over Kagoshima City, almost touching the rooftops and having the practice of dropping torpedoes at low altitude, I must conclude that our higher command headquarters had already begun to plan the raid for Pearl Harbor.

It soon proved true. The proficiency of the crewmen for each type of airplane had reached its required standard, and many combined exercises had been practiced. One day in October, all of the officers above the grade of company commander in our task force were assembled at the Kasanohara Aerodrome in the southern part of Kyushu. Commander Minoru Genda, the operation staff officer, came into the conference room and without formality opened the curtain on the front wall to reveal models of Pearl Harbor and Oahu Island, constructed on the full space of the wall.

For a few moments, he explained the plan of the attack on Pearl Harbor. Then Rear Adm. Munetaka Sakamaki, who had just returned from Germany, reported the progress of war by the German air force. All this was only confided to the officers who would lead the attack, and all was kept in the highest degree of secrecy.

When I was authorized to have a few days’ leave in November, I called my wife to Kagoshima, fearing that it might be the last time I would see her. Cheerfully, I sent her and our 6-month-old baby to her native place, without informing her about the coming war.

Now aircraft were being stowed aboard the carriers. One day before leaving Kyushu from Kunashiri Island, our last assembling point, a party was held in a restaurant in Kagoshima. Vice Admiral Chuichi Nagumo, commander in chief of the task force, exchanged cups of wine with each of the officers, shaking hands with them. I thought that I perceived the sparkle of a tear in his eye.

Our six carriers left for the assembly point at Hitokappu Bay, each followed by a destroyer. Some passed through the Sea of Japan, while the others went around the Pacific coast. Our departure was covered by training planes from several airfields in Kyushu, which continued to broadcast radio waves similar to those made by our carrier planes while exercising, in order to camouflage the sudden change in them when we left.

From November 19-22, all ships of the task force of the Hawaiian operation concluded their assembly in Hitokappu Bay. They were: our unit under Admiral Nagumo, composed of the six carriers Akagi, Kaga, Soryu, Hiryu, Shokaku and Zuikaku, with the mission of carrying out the air attack on Pearl Harbor and military installations on Oahu; the covering unit, made up of the light cruiser Abukuma and nine destroyers under Rear Adm. Sentaro Omori; the supporting unit, consisting of the battleships Hiei and Kirishima and the heavy cruisers Tone and Chikuma under Rear Adm. Gunichi Mikawa; the scouting unit of three submarines under Captain Kijiro Imaizumi; the Midway Island attack unit of three destroyers under Captain Yojin Konishi; and the supply unit of eight tankers under Captain Kyokuto Maru.

During the few days we stayed at Hitokappu Bay, the final consultations were held. At 6 a.m. on November 26, we departed Hitokappu Bay, passing eastward through the stormy North Pacific Ocean, keeping away from the merchant ship routes–secrecy was important.

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