坂井三郎
was a fighter aircraft and airbase garrison unit of the Imperial Japanese Navy (IJN) during the Pacific campaign of World War II. The flying portion of the unit was heavily involved in many of the major campaigns and battles of the first year of the war. The exploits of the unit were widely publicized in the Japanese media at the time, at least in part because the unit spawned more aces than any other fighter unit in the IJN. Several of the unit's aces were among the IJN's top scorers, and included Hiroyoshi Nishizawa, Saburō Sakai, Junichi Sasai, Watari Handa, Masaaki Shimakawa, and Toshio Ōta.