Military ranks of the Soviet Union (1955–1991)
The ranks and rank insignia of the Soviet Armed Forces between 1955 and 1991 were distinguished by the reorganisation of the Soviet armed forces after the death of Stalin, resulting in changes to ranks, insignia, and uniforms. == Army and air forces == === Shoulder straps to field utilization === In December 1956 the coloured border piping on officers' shoulder straps was changed.
Source: Wikipedia — Military ranks of the Soviet Union (1955–1991) (CC BY-SA 4.0)