During World War II, the Soviet military encountered substantial casualties on the Eastern Front, largely stemming from intense confrontations with Nazi Germany, such as the Siege of Leningrad, the Battle of Stalingrad, and the Battle of Kursk. The Soviet Union is believed to have lost more than 8.6 million military personnel, a figure markedly surpassing the losses of other nations engaged in the war. By way of comparison, Germany sustained about 5.3 million military fatalities, China approximately 3.5 million, Japan around 2.1 million, and the United States roughly 416,800.
https://x.com/elbirtus/status/1829109641428783195
https://dpengertian.blogspot.com/2024/08/which-country-suffered-most-military_29.html