Royal Prussian Jagdstaffel 11 ("No 11 Fighter Squadron"; commonly abbreviated to Jasta 11) was founded on 28 September 1916 from elements of 4 Armee's “Kampfeinsitzer” or KEKs) 1, 2 and 3 and mobilized on 11 October as part of the German Air Service's expansion program, forming permanent specialised fighter squadrons, or "Jastas". It became the most successful fighter squadron in the Luftstreitkräfte. Founding Jasta 11's first commander was First Lieutenant (Oberleutnant) Rudolf Lang, from its mobilization at Brayelles, until 14 January 1917. Jasta 11's first months of operations were very undistinguished. It was not until the appointment of 24-year-old Cavalry Captain (Rittmeister) Manfred von Richthofen on 16 January 1917 as Commanding Officer that the unit commenced its path to fame and immortality. Von Richthofen, later known as the Red Baron (due to the practice of painting his aircraft red for easy identification during combat) was already an able tactical pilot and ace following several months of service in Jasta 2 and became a highly effective unit commander who led his pilots by example. He already had 16 victories and was awarded the Pour le Merite just before he assumed his command. The unit was first based at Douai-Brayelles and then Roucourt for operations over the 6 Armee on the Arras front, the Jasta were equipped with various models of the excellent Albatros D.III sesquiplane fighter. Between 22 January 1917 and the end of March the Jasta claimed some 36 victories. The beginning of the Battle of Arras in early April meant a higher number of targets, with Jasta 11 logging 89 claims for aircraft destroyed in April (from a total of 298 made by all German fighter units for the month.) This decimation of the Royal Flying Corps became termed "Bloody April". The Jasta'''s performance is all the more extraordinary as the unit usually flew in small flights of six or fewer. Significant 'scorers' in the unit that April were Manfred von Richthofen (21 claims), Lt. Kurt Wolff (22), Lt. Karl Schäfer (15), Manfred's brother Lothar (15) and NCO pilot Sebastian Festner (10). Members Cavalry Captain (Rittmeister) Manfred von Richthofen First Lieutenant (Oberleutnant) Rudolf Lang Lt. Kurt Wolff Lt. Karl Schäfer Lothar von Richthofen Wilhelm Reinhard Sebastian Festner Erich Rüdiger von Wedel Hans Wolff Werner Voss Willi Gabriel Werner Steinhäuser Anton Baierlein Karl Allmenröder Eberhard Mohnicke Wolfram von Richthofen Wilhelm Gisbert Groos Erich Just George Schiller Friedrich T. Noltenius Alfred