About 50 - 75 Million.
http://en.wikipedia.org/wiki/World_War_II_casualties
6,969,696.9696969 ( . ) ( . )
During World War 2 the total casualty lost by the French were about 570,000.
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 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.
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.
During World War 2 the total casualty lost by Scotland were about 55,000.
There were about 300,000 million casualties in world war 1.
See: Wikipedia World War II Casualties.
It is known that the Russian side lost 60,000 troops in the Kerensky (or July) Offensive of World War I. The total number of casualties for the Austro-Hungarian and German side is unknown.