About 50 - 75 Million.
http://en.wikipedia.org/wiki/World_War_II_casualties
6,969,696.9696969 ( . ) ( . )
The total allied casualties of world war two with civilians and military goes up to 39,963,700 compared to the axis casualties of 48,231,700.
During World War 2 the total casualty lost by the French were about 570,000.
During World War 2 the total casualty lost by the British were about 455,000.
During World War 2 the total casualty lost by Iraq were only about 500.
1.1 million German casualties in WW1.
There were about 300,000 million casualties in world war 1.
During World War 2 the total casualty lost by Scotland were about 55,000.
During World War 2 the total casualty lost by the US were about 418,000.
During World War 2 the total casualty lost by Nazi Germany (without Austria) were about 8 Million.
See: Wikipedia World War II Casualties.