In August 1945, the 9th Air Army, fortified by the 19th Bomber Corps, entered the 1st Far Eastern Front.
On August 9, it bombarded military facilities in the areas of Changchun and Harbin, provided air support to the 1st Red Banner and 5th armies in breaking through the defense of the Imperial Japanese Armed Forces.
From August 10 to 17, it supported the advance of the troops of the 1st Far Eastern Front on Harbin and Changchun.
Since August 18, the 9th Air Army started using the airfields of Harbin, Kirin, Yanji, Wonsan, Hamhung and others.
According to CIA intelligence, at least two regiments from the formation covertly fought against the United States, South Korea, and their allies in the Korean War.