Original sentence: Arnold joined the Luftwaffe in september 1939 , training for a technical role with the Kampffliegerschule at Tutow.Heinz Arnold (12 February 1919 in Flöha near Chemnitz  – 17 April 1945) was a former German Luftwaffe fighter ace
Edited sentence: Arnold joined the Luftwaffe in September 1939 , training for a technical role with the Kampffliegerschule at Tutow.Heinz Arnold (12 February 1919 in Flöha near Chemnitz – 17 April 1945) was a former German Luftwaffe fighter ace