SS Long Service Awards (German: SS-Dienstauszeichnungen) were given in grades of four years, eight years, twelve years, twenty-five years, and forty years. The four and eight-year service awards were in the form of circular medals while the 12 and 25-year service awards were in the form of swastikas. The SS service awards were designed in Munich by Professor Karl Diebitsch. The awards varied in design depending on the length of service of the recipient. According to historian Chris Ailsby the awards ceased to be given at the end of 1941.