THU 25 JUN 1942
President Roosevelt and British Prime Minister Churchill conclude conference in Washington; decision is reached for combined U.S.-British research and development of the atomic bomb.
Carrier Saratoga (CV-3) ferries 25 USAAF P-40s (73d Fighter Squadron) to Midway to provide fighter defense for the atoll, after the heavy losses suffered by VMF 221 during the Battle of Midway on 4 June. Saratoga also brings in 18 SBDs to bring VMSB 241 (also badly battered at Midway) up to strength.
Submarine Nautilus (SS-168) torpedoes and sinks Japanese destroyer Yamakaze southeast of Yokosuka, Japan, 34°34'N, 140°26'E.
Submarine Grouper (SS-214) damages Japanese oiler No.3 Tonan Maru, 28°46'N, 136°36'E.
PBYs (VP 71) bomb Japanese base at Tulagi; Rear Admiral John S. McCain (Commander, Aircraft, South Pacific Force) is present in one of the flying boats to observe operations.
U.S. Army establishes European Theater of Operations under Major General Dwight D. Eisenhower.
Sunday, June 25, 2017
Atomic Age Made Official;
by M. Bouffant at 19:42