Schlachtgeschwader 1 (SchlG 1, since 1943 rather SG 1) was a German ground-attack wing during World War II. The first formation was on 13 January 1942, from the II.(Schl)/Lehrgeschwader 2, initially with two Gruppen each made of four Staffeln. The second formation was on 18 October 1943, by renaming the existing Sturzkampfgeschwader 1 (StG 1). The new unit's name became abbreviated simply SG 1.