The Luftwaffe[N 2] (German pronunciation: [ˈlʊftvafə] (listen)) was the aerial warfare branch of the Wehrmacht during World War II. Germany's military air arms during World War I, the Luftstreitkräfte of the Imperial Army and the Marine-Fliegerabteilung of the Imperial Navy, had been disbanded in May 1920 as a result of the terms of the Treaty of Versailles which stated that Germany was forbidden to have any air force.