While it is impossible to get an exact number of casualties during WWII, estimates go as high as 60,000,000. Of that amount, 15,000,000 are estimated deaths during battle, while the remaining 45,000,000 are civilian deaths. Below is a list of the countries with the highest casualties (I only included ones above one million), both civilian and military combined:
- Soviet Union - 24 million
- China - 20 million
- Germany - 6.6 million - 8.8 million
- Poland - 5.6 million
- Dutch East Indies (present-day Indonesia) - 3-4 million
- Japan - 2.6 million - 3.1 million
- India - 1.5 million - 2.5 million (colonial soldiers used by the British)
- French Indochina (present-day Laos and Vietnam) - 1 million - 1.5 million (colonial troops used by the French)
While we tend to look at the Holocaust as a big contributer (which is was, at 6 million estimated deaths) as well as the deaths within the Soviet Union (most estimates are placed at 19 million), often overlooked are the deaths associated with the second Sino-Japanese War, a war between China and Japan that began as early as the Japanese invasion of Manchuria in 1931.
There were many people who died in World War 2. Over 60 million people were killed. There were many major battles that caused a genocide of people. For example, the Holocaust was an attempt to exterminate the Jewish race. There was also the bombing of Pearl Harbor and the Hiroshima bomb attack. There is not an exact number of deaths that can be calculated. However, there was a huge amount of deaths in WW2. You can use the link below for reference.