Topic summary
Soviet–Japanese War

- First Area Army
- Third Area Army
- Independent units
Mengjiang National Army
- 1,577,225 men
- 26,137 artillery
- 1,852 sup. artillery
- 5,556 tanks and self-propelled artillery
- 5,368 aircraft
- 16,000 men
- c. 1,092,400 men
- 200,000 troops
- 44,000 men
- 30,253 combat casualties, including:
- 9,780 killed
- 911 missing
- 1,340 non-combat deaths
- 24,425 sanitary losses, including:
- 19,562 wounded
- 4,863 sick
Mongolian:
- 72 irrecoverable
- 125 wounded, sick, injured
- 36,653 total casualties
- 78 tanks and SPGs
- 62 combat aircraft
- 232 guns and mortars
- 22,300–23,600 killed
- est.40,000 wounded
Soviet claim:
- 83,737 killed
- 20,000 wounded (Manchuria only)
- < 41,199 captured (19 August)
- 640,000 captured and disarmed (total)
The Soviet–Japanese War was a campaign of the Second World War that began with the Soviet invasion of Manchuria following the Soviet declaration of war against Japan on 8 August 1945. The Soviet Union and Mongolian People's Republic toppled the Japanese puppet states of Manchukuo in Manchuria and Mengjiang in Inner Mongolia, as well as northern Korea, Karafuto on the island of Sakhalin, and the Kuril Islands. The defeat of Japan's Kwantung Army helped bring about the Japanese surrender and the end of World War II. The Soviet entry into the war showed that the Soviet Union would not act as a third party in negotiating a conditional end to hostilities, and thus was a factor in the Japanese government's decision to surrender unconditionally.