The Soviet Union switched from the Axis Forces to the Allied Forces when the Nazi Germans killed 20 million people in their nation. They did have their revenge on the Nazis when they entered the Eastern Front to destroy the Nazi's Germans.
One Battalion of Georgians switched sides, there were a few countries who declared neutrality but then joined the war, there were also countries who dropped out early. But, there were no major players who switched sides.
The nations that switched sides were Russia, , Britain, France, Germany and Austria-Hungary
Italy
Italy
Italy
Yes, they switched sides when Germany atacked them.
Italy was the only country to switch sides at the very beginning. Bulgaria and Russia switched sides late into the war.
Russia traded sides because Germany broke their treaty agreement and invaded. They switched to the Allies.
Italy was in the Triple Allince but then switched to fight with Russia, Britain and France and dont forget the U.S.
the alliesto be more exact... Italy changed sides. Not ALL of the allies
Italy switched sides a year after World War I began. Initially part of the Triple Alliance with Germany and Austria-Hungary, Italy declared neutrality at the war's outbreak in 1914. In 1915, after being promised territorial gains by the Allies, Italy joined the Entente Powers against its former allies.
Technically WW1, but they switched sides.