During World War II, air forces played a crucial role in military strategy and operations. Major powers, including the United States, Germany, Britain, and Japan, developed advanced aircraft for various purposes, such as bombers, fighters, and reconnaissance planes. These forces conducted significant campaigns, including the Battle of Britain and the Doolittle Raid. The air war involved both strategic bombing and air superiority missions. The Allied forces aimed to destroy enemy infrastructure and weaken morale, while the Axis powers sought to dominate the skies. Innovations in aviation technology, such as radar and long-range bombers, transformed aerial combat and shaped the outcome of the war.