European Theater After D-Day By mfostertimetoast Jun 6, 1944 D-Day Invasion On June 4, 1944 the Allies, under the command of General Dwight Eisenhower, launched the most massive invasion in history, attacking German occupied France on the shores of Normandy to begin the campaign to liberate Europe from Nazi tyranny. Period: Jun 6, 1944 to Apr 25, 1945 Major Eurpoean Battles of World War II