 All of the J 20s were stationed at the F10 wing, Bulltofta airbase, Malmö, in the southern tip of Sweden in 1941-45.They were mainly used to intercept Axis and Allied bombers that violated Swedish airspace.One J 20 was lost in combat, shot down while intercepting a "Luftwaffe" Dornier Do 24 near Sölvesborg on 3 April 1945.