Soviet Invasion of Mainland Japan (Allied Defeat)

The Soviet invasion of mainland Japan was a major military conflict between the Coalition and the Communist forces from October 29 to November 30, 1937 in the first coalition war against the Soviet Union. The battle ended in a Soviet victory and marked the end of the war.

Background
After the failed Manchuria Offensive, Coalition couldn't sent forces to mainland Japan from Northeastern China and the Korean peninsula. The Soviet armed forces immediately launch an operation to takeover mainland Japan, the main cause of the Coalition war.

Naval Battles
Due to lack of infantry forces defending Japan, the Coalition forces launch naval attacks on the Soviet forces in South Sakhalin, the Kuril islands, Manchuria and Korea. Japan became indefensible after over 20 coalition warships captured by the Soviet forces.

Soviet landing
After destroying the major pacific fleets of the coalition, the Soviet Red Army and Naval Marines landed on Northern Japan from Kuril, Western Japan from Manchuria and Southern Japan from Korea. The Red Army surrounded Tokyo on November 20, led to Japanese surrender to the Soviet Union.

Aftermath

 * The Emperor and Supreme Commanders of Japan taken prisoner by the Soviets.
 * Destruction of Japanese transports, including railroads.
 * Japan under Soviet military administration until the Peace of Leningrad actives.