The air force service uniform consists of a blue jacket and trousers with a light blue shirt, dark blue tie, and black shoes. Olive battle dress similar to the army fatigue uniform is worn in basic training and during other field duty. Flying personnel wear wings on their right breast. Other air force personnel wear a modified wing device with a symbol in its centre denoting service specialisation. These "Tätigkeitsabzeichen" come in bronze, silver, or gold, depending on one's length of service in the specialty. Wings, superimposed over a wreath, in gold, silver, or bronze, depending on rank, are also worn on the service or field cap.