Today in World War II History—April 21, 1943
Friday, April 21, 2023 by Sarah Sundin

Adm. Mineichi Koga, 1940s (public domain via Wikipedia)
80 Years Ago—Apr. 21, 1943: Adm. Mineichi Koga replaces Yamamoto as commander of Japanese Combined Fleet.
Capt. Frederick M. Trapnell makes the first jet flight by a US naval aviator, in a Bell XP-59A Airacomet at Muroc Army Air Field, CA.