The Allies group consisted of France, Britain, the U.S., the Soviet Union, Canada and China. The Axis group consisted of Germany, Italy, and Japan. World War II (a.k.a the Second World War), the opposing alliances are now referred to as ‘The Axis’ and ‘The Allies’. The Allied powers group consisted of France, Britain, Russia, Italy, Japan, Canada and (from 1917) the U.S. The central powers group consisted of Germany, Austria-Hungary, Turkey and Bulgaria. The world warring nations were divided into two groups namely ‘The Central Powers’ and ‘The Allied Powers’. World War I (a.k.a the First World War, the Great War, the War To End All Wars) was centered on Europe.
Both wars involved military alliances between different groups of countries. They were the largest military conflicts in human history. The First World War (WWI) was fought from 1914 to 1918 and the Second World War (or WWII) was fought from 1939 to 1945.