Republic of Vietnam (RVN) Staff Service 1C Medal

A military award of South Vietnam issued between the years of 1964 and 1973. Awarded to U.S. service members having performed at least six months of military duty, while serving on a military staff, with such performance being above and beyond that which would normally be required for the position. The 1st Class version (1C) is awarded to officers and the 2nd Class version (2C) to NCOs and enlisted.