On this day, 86 years ago, on August 20, 1939 (July 6, 1939 in the lunar calendar), the Soviet army launched a counterattack on the Nomenhan front line under the command of Zhukov. On August 20, 1939, the Soviet Army launched a counterattack on the Nomenhan front under the command of Zhukov. The Soviet army launched its main offensive on the 30-kilometer-long front line. The Soviets invested a total of about 57,000 troops to cooperate with artillery and air force support. The fierce battle lasted until August 24, when the northern and southern wings of the Soviet army surrounded Nomenhan, and the main force of the Japanese army (the 23rd Division and the first part of the 7th Division) was surrounded. Georgy Konstantinovich Zhukov commented: The blitz offensive adopted in this battle did not attract much attention in the noisy European battlefield, but it played a great role in preventing Japan from going north and causing the Soviet Union to be attacked from both sides. The Japanese army never talked about going north again.