After 9 February 1940, the 18th Division was returned to Canton and the 21st Army was disbanded, the forces of the 21st Army came under the control of the Southern China Area Army (Canton) under General Rikichi Andō (10 Feb 1940 – 5 Oct 1940) and General Jun Ushiroku (5 Oct 1940 – 26 Jun 1941) The forces remaining in Guangxi, now subordinate to South China Front Army, became the Japanese Twenty-Second Army under Lt. Gen Seiichi Kuno (10 Feb 1940 – 19 Nov 1940)[6, until the Army was disbanded at the end of the campaign. On June 3, 1940, the Guards Mixed Brigade became the 1st Guards Brigade of the 1st Guards Division. The 2nd Imperial Guards Infantry Regiment under Col. Kunio Osonoe from 1st Guards Brigade was assigned to the Indochina Expeditionary Army in September, 1940. In October 1940, the remainder of 1st Guards Brigade (1st Guard Regiment and support units) joined other Japanese units occupying French Indochina.