World War II by country World War II by country Nearly every country and territory in the world participated in World War II, with the exception of only a few nations which remained neutral. The Second World War pitted two alliances against each other, the Axis powers and the Allied powers. The leading Axis powers were Nazi Germany, the Kingdom of Italy and the Empire of Japan; while the United Kingdom, the United States, the Soviet Union and China were the "Big Four" Allied powers. The countries involved in or affected by World War II are listed here alphabetically, with a description of their role
Western Allied invasion of Germany Western Allied invasion of Germany The Western Allied invasion of Germany was coordinated by the Western Allies during the final months of hostilities in the European theatre of World War II. In preparation for the Allied invasion of Germany, a series of Offensive Operations were designed to seize and capture the east and west bank of the Rhine River. Operation Veritable and Operation Grenade in February 1945, and Operation Lumberjack and Operation Undertone in March 1945. Allied invasion of Germany started with the Western Allies crossing the Rhine River on 22 March 1945 before fanning out and overrunning all of