Uniform of the Union Army letters US. Officers, NCOs and cavalry troopers were equipped with a sword belt with a rectangular buckle with eagle motif. Rank was displayed on epaulettes (dress occasions) or shoulder straps(field duties): no insignia for a second lieutenant, one gold bar for a first lieutenant, two gold bars for a captain, a gold oak leaf for a major, a silver oak leaf for a lieutenant colonel, a silver eagle for a colonel and one, two or three silver stars for a general, depending on his seniority. The color of the shoulder strap fields – with trims in gold braid – were
United States Army enlisted rank insignia was briefly termed lance corporal. In 1966, the rank of Sergeant Major of the Army was established, its holder an assistant to the Army chief of staff. Considered a higher grade than sergeant major (or than command sergeant major from 1968), the Sergeant Major of the Army didn't receive its own unique rank insignia until 1979. In 1968, the rank of command sergeant major was established as an assistant to the commanding officer at battalion, brigade, division, and corps level. Also, that year the insignia of private first class received one arc under the chevron. In 1978, the rank of