On the night of 9 August 1945, without artillery and air support, the 17th Army began the attack.

On the third day of the Khingan–Mukden Offensive Operation, in cooperation with the Soviet-Mongolian Cavalry mechanized group, the 17th Army approached the south-western spurs of the Greater Khingan Mountains.

In the later days of the operation the army successfully overcame Japanese opposition, and repulsed counterattacks in the area of Linxi.

In late August 1945 in conjunction with the mechanized cavalry group of the front's main forces the 17th Army reached the area of Linyuan, and one of the divisions of the army was on the coast of Liaodong Bay near the town of Shanhaiguan.

[3] During the invasion of Manchuria, the 17th Army included After the end of the war with Japan, the army became part of the Transbaikal-Amur Military District (formed from the Transbaikal Front) on 10 September 1945, and was disbanded between July and August 1946.