Whakaotihia te rerenga e whai ake nei: I uru tuatahi a Talley ki te ope taua hei rangatira rahui i te United States Army Coast Artillery Corps i te waenganui o nga tau 1920. I uru ia ki te ope taua o te United States i te Pipiri 1926. Hei tuarua tuarua, i noho a Talley ki te 2nd Engineer Battalion i Texas me Colorado i mua i tana haere ki te Kura Kaitohutohu i Virginia. I uru ia ki te Rangahau Canal o Nicaragua me te awhina i muri mai o te
Te ru o Nikarāwa i te tau 1931. I whakawhiwhia a Talley ki te whakamutu i te ahi i muri i te ruu i Managua. I te hokinga mai o Talley ki te United States, i mahi ia ki te hanga mahere i runga i nga whakaahua rererangi mo nga tau e iwa, i whakaputa i te pukapuka "Photogrammetry". I waihangahia hoki e ia he 'tereocomparagraph kawe' me te korero i te Whare Wananga o Harvard. Ko ia te kaiwhakahaere matua o te kaiwhakangungu rohe i Portland, Oregon.