File:WWII.png

Summary
From where it was taken from English Wikipedia.

Map with the Participants in World War II:
 * Dark Green : Allies before the attack on Pearl Harbor, including colonies and occupied countries.
 * Light Green : Allied countries that entered the war after the Japanese attack on Pearl Harbor.
 * Orange : Axis Powers
 * Grey : Neutral countries during WWII
 * Dark green dots represent countries that initially were neutral but during the war were annexed by the USSR
 * Light green dots represent countries that later in the war changed from the Axis to the Allies
 * Orange dots represent countries that after being conquered by the Axis Powers, became puppets of those (Vichy France and several French colonies, Croatia)