I whanau i Austria i te tau 1918 me te mahi hei kaihanga paraoa ki ona tau tekau ma rima, ka uru atu a Bartels ki te "Luftwaffe" i muri i te uniana o Tiamana me Austria i te 1938. I oti i a Bartels tana whakangungu hei kaiurungi i te 1941. I whakawhiwhia ia ki te "Jagdgeschwader" 26 "Schlageter" (JG 26<unk>26th Fighter Wing) i te Channel Front
i whakahaua ki te aukati i nga whakaekenga a te Royal Air Force (RAF) i runga i te France me Belgium. I tutuki i a ia tana wikitoria rererangi tuatahi i Akuhata 1941. I whakawhitihia a Bartels ki te "Jagdgeschwader" 5 (JG 5<unk>5th Fighter Wing) i te Raki o te Rawhiti i reira i whakawhiwhia ai ia ki te Knight's Cross of the Iron Cross mo nga wikitoria 46 o te rangi. I te tau 1943 ka neke a Bartels ki "Jagdgeschwader" 27 "Afrika" (JG 27<unk>27th Fighter Wing) ki te mahi i nga waahi o te Moana-a-Kiwa me nga Balkans ana i te mutunga o te tau 73 nga wikitoria. I te tau 1944 ka hoki ia ki te Western Front ka whawhai ki te pakanga o Normandy i te Pipiri ki te Akuhata 1944. I piki ake te nama whaiaro a Bartel ki te 96 a i whakaingoatia ia mo te Oak Leaves o te Knight's Cross.