(1930-40), the Battle of Britain (June–September 1940), massive invasion of the Soviet Union (1941), Island Hopping, atomic bombings of Hiroshima and Nagasaki (1945). Major Battles: Dunkirk , Operation Barbarosa, Pearl Harbor, Stalingrad, Kursk, Operation Overlord, Midway, Al Alamein, etc. Science had a significant impact on the technology of warfare. This may