Japanese Home Islands Campaign
Part of Asia-Pacific Front of World War III
Date March 1990-?Sept. 1990?
Location Japan
  • Ryukyu Islands
  • Hokkaido
  • Kuril and Sakhalin
Status US-Japanese Victory/Chinese-Soviet-North Korean Failure
Kuril and Sakhalin returned to Japan

Supported by:

Communist Forces
This Japanese Home Islands Campaign (also called the Battle for Japan) was an attempted offensive meant to cripple U.S. bases in the island nation of Japan, and if necessary, occupy the entire country. The Soviet Union took the opportunity to attack Hokkaido via the Kuril Islands following China's entry into war. The plan was to meet up with Chinese forces going to attack Japan via the Ryukyu Islands. At the same time, China had attacked the Himalayas, the Korean Peninsula, and the Philippines as a diversion to allied forces in the Asia-Pacific.

The attempted invasion of Japan was costly for both sides. The Japan Self-Defense Force, accompanied by U.S. Marines and the U.S. Navy, was able to perform efficiently on the battlefield, having been braced for any attack on belligerent states. The Chinese were able to land in the Ryukyu Islands and push inland into Okinawa. In Okinawa, fierce combat occurred between the PLA, the JSDF, and the US Marines. Meanwhile, in Hokkaido, the Soviets were able to occupy the island but any advance further south was halted. It would remain the same stalemate until Soviet forces were recalled by arrested President Mikhail Gorbachev after he was released in counter coup detat against the hardline Soviet government. Upon the withdrawal of Soviet forces in Hokkaido, the remaining PLA in the Ryukyu were either killed or captured by the JSDF.