WW2 time line By Oli.Goodwin :D Mar 16, 1939 The Invasion of Czechoslovkia Sep 1, 1939 The Invasion of Poland Hitler invaded Poland Period: Jun 16, 1940 to Jun 18, 1944 D-Day Period: Jul 10, 1940 to Oct 31, 1940 Battle of Britain Period: Jul 15, 1940 to Dec 15, 1943 Battle of the Atlantic Period: Jun 22, 1941 to Dec 16, 1941 Operation Barbarossa Dec 7, 1941 Pear Harbor Feb 14, 1945 Dropping Of the Atomic Bomb