18 April 1943 A.D. BOUGANVILLE: Japan’s ADM Yamamoto Killed in Aircraft Downed by US P-38 Fighters
18 April 1943 A.D. BOUGANVILLE: Japan’s ADM Yamamoto Killed in Aircraft Downed by US P-38 Fighters https://thisdayinusmilhist.wordpress.com/2014/04/18/april-18/ 1943 – An aircraft carrying the Commander of the Japanese Combined Fleet, Admiral Yamamoto, is shot down by P-38 Lighting fighters over Bougainville. Yamamoto is killed. This action is the result the interception of a coded Japanese message announcing a visit by Yamamoto. The Japanese fail to deduce that their codes are insecure.