Royal Prussian Jagdstaffel 19 was a World War I "hunting group" of the Luftstreitkräfte, the air arm of the Imperial German Army during World War I. As one of the original German fighter squadrons, the unit would score 92 verified aerial victories, including ten wins over enemy observation balloons.

Jagdgeschwader II was the Imperial German Air Service's second fighter wing. Established because of the great success of Manfred von Richthofen's preceding Jagdgeschwader I wing, Jagdgeschwader II and Jagdgeschwader III were founded on 2 February 1918. JG II was assigned four squadrons nominally equipped with 14 aircraft each. The new wing was supposed to be fully operational in time for an offensive slated for 21 March 1918. Named to raise and lead it was 23-victory flying ace Hauptmann Adolf von Tutschek. However, he was killed in action on 15 March 1918.