The outbreak of the Second World War was essentially a conflict between Allied powers, countries including Great Britain, the Soviet Union, and the United States, and Axis powers, those aligned with Nazi Germany and Japan. But as the conflict progressed and the defeat of Adolf Hitler seemed ever more likely, several nations once supportive of the Third Reich switched their allegiance, preferring to side with the victors rather than the vanquished.
So, whose loyalty waned as the Allies moved in?
Click through this gallery and find out which four countries switched sides during WWII.