What country had the most deaths in world war 2?
the USSR had a death toll of 21,300,000 during World War II. A little over half of the deaths were military.
The most grand total of deaths in any one war occurred in WWII. They usually say over 50 million people died in that war but recently I found an official government site that had a total of 61 million people. I would believe that number myself since it was based on a country by country basis with all deaths tallied.