Rubuta ci gaba don wannan sakin layi - An haife shi a Ostiryia a 1918 kuma yana aiki a matsayin mai burodi har zuwa ƙarshen shekarunsa na matasa Bartels ya shiga "Luftwaffe" bayan ƙungiyar Jamus da Austria a 1938. Bartels ya kammala karatunsa a matsayin matukin jirgi a 1941. An sanya shi zuwa "Jagdgeschwader" 26 "Schlageter" (JG 26 <unk> 26th Fighter Wing) a gaban Channel
wanda aka ɗorawa alhakin hanawa Royal Air Force (RAF) mamaye Faransa da Belgium da aka mamaye. Ya sami nasarar farko ta iska a watan Agusta 1941. An tura Bartels zuwa "Jagdgeschwader" 5 (JG 5<unk>5th Fighter Wing) a Gabas ta Gabas inda aka ba shi lambar yabo ta Knight's Cross na Iron Cross don nasarorin iska 46. A cikin 1943 Bartels ya koma "Jagdgeschwader" 27 "Afrika" (JG 27<unk>27th Fighter Wing) don yin aiki a cikin wasan kwaikwayo na Bahar Rum da Balkans kuma a ƙarshen shekara yana da nasarori 73. A cikin 1944 ya koma Yammacin Yamma kuma ya yi yaƙi da Kamfen na Normandy a watan Yuni zuwa Agusta 1944. Adadin da Bartel ya samu ya kai 96 kuma an ba shi lambar yabo ta Oak Leaves na Knight's Cross.