Countries involved with the Allies during WW2 were Britain, France, Belgium, Poland (the invasion of Poland had forced the army to escape into exile, however, many soldiers in the Polish Army still continued to fight in Britain's army), Canada, Australia, New Zealand, the U.S (America had issued a lend-lease act in order to give resources to Britain, so they remained neutral most of the way until 1940, when Japan attacked Pearl Harbor, this made the U.S finally declare war on the Axis Powers officially), India (at the time a colony of Britain), Burma (also a colony), The Belgian Congo (colony of Belgium), Romania (only as of 1944, when King Michael signed a peace treaty with the Soviet Union) China (then ruled by the Kuomintang, who had managed an uneasy treaty with the Chinese Communist Party to fight together until the wars end), Norway (although not officially, Norway had denied Germany occupation of their land, when Germany invaded they had also fought back), and The Soviet Union (starting from 1940, when German troops secretly invaded the borders of the Soviet Union in an operation known as Barbarossa)
