What codename did historians give the Soviet invasion of Japanese-occupied Manchuria in August 1945?

Operation August Storm is the commonly used codename for the Soviet invasion of Japanese-occupied Manchuria in August 1945.

The Soviet offensive began on 9 August 1945, when the Red Army attacked the Japanese-controlled state of Manchukuo. Soviet forces advanced from several directions across difficult terrain, including Manchuria, Inner Mongolia, southern Sakhalin, and the Kuril Islands. Their main opponent was Japan’s Kwantung Army.

The operation unfolded during the final days of World War II. The Soviet Union had agreed to enter the war against Japan after Germany’s defeat, and its attack added a major new front while Japan was already facing the consequences of the atomic bombings.

The name August Storm is a later historical label rather than the official wartime codename used by Soviet planners. It is also sometimes confused with Operation Ichi-Go, a Japanese offensive in China in 1944, or Operation Overlord, the Allied invasion of Normandy.