Leutnant Otto Parschau (11 November 1890 – 21 July 1916) was a German World War I flying ace and recipient of the Pour le Mérite, Royal House Order of Hohenzollern, and Iron Cross, First Class.

[3] It was requisitioned by the Fliegertruppe and von Buttlar was commissioned as an officer in the German Army at the outbreak of hostilities.

Following this were periods in Flanders and Alsace-Lorraine before Parschau was posted first to West Prussia and then on to Galicia on the Eastern Front.

Because Parschau was recognised as an experienced and proficient pilot, he was selected to go to Feldflieger Abteilung 62 (FFA 62) at Douai as an instructor on monoplanes.

Amongst Parschau's students at FFA 62 were the notable pioneer German flying aces, Max Immelmann and Oswald Boelcke.

[2] Despite his earlier complaints of his Parabellum machine gun jamming[citation needed], he managed to reel off a string of six victories over enemy airplanes between 11 October 1915[5] and 2 July 1916[5] as part of the Fokker Scourge.

[7] On 21 July 1916 Parschau was mortally wounded during combat with Royal Flying Corps aircraft over Grévillers.