|Part of the Soviet Eastern Front of Great Patriotic War (from 1941)|
Japanese troops enter Vladivostok in 1940.
The Amur–Lena Offensive was a Imperial Japanese Army operation on the Far East Front in the Asian Theatre of Great Patriotic War. It took place between 22 June and 2 December 1941. The offensive took Japanese forces from their start lines on the Amur River almost 2704 mi (4352 km) to the Lena River; where the Russian Sakha Republic capital of Yakutsk is located.