Whakaotihia te rerenga e whai ake nei: I te Paenga-whāwhā 1944, i te tuku i te mana o te 2nd Armored Division ki a Major General Edward H. Brooks, i tohua ia hei rangatira o nga kaimahi o te toru o nga ope taua, e mahi ana ano i raro i te Lieutenant General George Patton. I mahi a Gaffey i roto i tenei kaha i roto i te
Ko te pakanga i Uropi ki te Hauauru, mai i te wa i eke ai te ope taua tuatoru ki Parani i te Hurae 1944 me te whai waahi nui ki te Operation Cobra me te Pakanga o te Falaise Gap, i whai ake i te whakaekenga a nga Allied mai i Paris ki te Rhine me te Pakanga o Metz. I te marama o Tihema 1944 ka whakakapi ia i a Major General John Shirley Wood hei CG o te 4th Armored Division, i whai waahi nui ki te Pakanga o te Bulge, i awhina ki te pakaru i te whakapae o Bastogne. I noho tonu ia hei rangatira mo te wehenga tae noa ki te Poutu-te-rangi 1945, i te mutunga o te pakanga i Uropi, i te wa i riro ai ia hei CG o te XXIII Corps. I whakarerea e ia te whakahau o te XXIII Corps i te marama o Hepetema, i te mutunga o te pakanga na te tuku o Japan.