The Akagi, first IJN fleet aircraft carrier: IJN Akagi was the second IJN carrier to enter service, converted, as her sister ship Kaga later, on a cancelled capital from “8-8 plan” due to the Washington treaty limitations. With Kaga, the Zuikaku class, IJN Hiryu and IJN Soryu, she was part of the famous Kido Butai, probably the world’s best, aircraft carrier unit worldwide in 1941. Famous for her participation in the Pearl harbour attack in December 1941, IJN Kaga already had a long career under her belt, notably in China, and its pilots were among the world’s best trained, led by 15 years veterans. IJN Akagi, like the US Lexington class, was converted from a battlecruiser and arguably more successful than Kaga, from a battleship. She was fast and could carry 91 planes, but her career was relatively short, as she sank in the battle of Midway in June 1942,