Bell P-39Q Airacobra, 1940s (USAAF photo)
75 Years Ago—Apr. 30, 1942: First use of US P-39 Airacobra fighter plane in combat—Australia-based P-39s fly mission to Lae and Salamaua, New Guinea.
USS Peto, first sub built on the Great Lakes, is launched at Manitowoc, WI.
Japanese secure central Burma.
USS Peto side launching at Manitowoc Shipbuilding Co, Manitowoc, WI, 30 April 1942 (US Navy photo).
