Minoru Genda was born in 1904 and met Mitsuo Fuchida (Fuchida, Mitsuo) at the Naval Academy. Genda was asked to undertake a feasibility study on an attack on Pearl Harbor by Rear Admiral Takajiro Onishi (Onishi, Takajiro) and, with Fuchida, finished in early March 1941. Eight key points were made:
1 - Surprise was essential.
2 - American aircraft carriers should be the prime targets.
3 - US air forces on Oahu had to be neutralized to allow bombers to attack unchallenged.
4 - All available Japanese carriers should be used.
5 - All types of bombing, torpedo, horizontal and dive-bombing should be used.
6 - Strong fighter escorts would be needed.
7 - Refueling at sea would be required to give the Japanese ships enough range.
8 - A daylight attack would be best.
Contrary views were expressed by Captain Sadatoshi Tomioka (Tomioka, Sadatoshi). Genda served as Vice Admiral Chuichi Nagumo's (Nagumo, Chuichi) air advisor on board Akagi. When Fuchida was unable to take part in the Midway operation because of appendicitis, Genda took his place. He commanded Air Group 353 in the Battle of Okinawa and remained in that command to the end of the war.
You can find out more about Minoru Genda in the following Osprey books: