On November 2, 1940, the People's Commissar of Defense signed Order No. 391 "On the establishment of military ranks for privates and junior commanders of the Red Army and the introduction of instructions for the service of junior commanders." According to this, the ranks of soldier and corporal of the Red Army were used for regular staff, and junior sergeant, sergeant, senior sergeant and foreman were used for junior officers. Also, according to Article 2 of the decree, starting January 1, 1941, new buttonholes were introduced to the junior command staff of the Red Army. The order was a development of the reform that began in the summer of 1940 with ranks and insignia of senior command personnel. The buttonholes, introduced on January 1, 1941, were used by the Red Army until early 1943, when shoulder straps were introduced for sergeants. In August 1941, khaki buttons were introduced for use at the front, but at the rear, privates and junior command personnel continued to wear colored buttonholes.

On November 2, 1940, the People's Commissar of Defense signed Order No. 391 "On the establishment of military ranks for privates and junior commanders of the Red Army and the introduction of instructions for the service of junior commanders." According to this, the ranks of soldier and corporal of the Red Army were used for regular staff, and junior sergeant, sergeant, senior sergeant and foreman were used for junior officers. Also, according to Article 2 of the decree, starting January 1, 1941, new buttonholes were introduced to the junior command staff of the Red Army. The order was a development of the reform that began in the summer of 1940 with ranks and insignia of senior command personnel. The buttonholes, introduced on January 1, 1941, were used by the Red Army until early 1943, when shoulder straps were introduced for sergeants. In August 1941, khaki buttons were introduced for use at the front, but at the rear, privates and junior command personnel continued to wear colored buttonholes.