Whakaotihia te rerenga e whai ake nei: I te Pakanga Tuarua o te Ao, i whakamatau ia ki te whakauru ki te US Navy engari i whakakahoretia na te kino o te tirohanga, na ka uru ia ki te US Army Air Forces hei kaitohutohu matauranga. Whai muri i tana whiwhinga hei rangatira tuatahi i te 1942, ka oti tana whakangungu i nga turanga tata ki Miami, Florida me Harrisburg, Pennsylvania. I tukuna ia ki te 319th Bombardment Group, i neke ki Ingarangi i muri mai i taua tau. I mahi ia ki Awherika ki te Raki i te wā
Operation Torch a i muri mai ka tohaina ki te Tumuaki o te Northwest African Air Forces. I reira, i mahi a Powell i Sicily i te wa o te whakaekenga a te Allied o Sicily.