 The plan was similar to the one Zhukov had used to achieve victory at Khalkhin Gol three years before, where he had sprung a double envelopment and destroyed the 23rd Division of the Japanese army.On 19 November 1942, the Red Army launched Operation Uranus.The attacking Soviet units under the command of Gen. Nikolay Vatutin consisted of three complete armies, the 1st Guards Army, 5th Tank Army and 21st Army, including a total of 18 infantry divisions, eight tank brigades, two motorised brigades, six cavalry divisions and one anti-tank brigade.