The Gruppe was the basic autonomous unit in the Luftwaffe. Each Gruppe comprised three or four Staffeln.  Staffel was the equivalent of a squadron and was usually comprised of twelve aircraft.  It would be led by a captain or lieutenant known as the Staffelkapitan. The decals are sized to fit on most 1-285 & 1-300 WWII German fighter castings. The decal sheet includes markings for both the Geschwader HQ Staff as well as the Gruppe Staff officers.