Tuhia he tohutoro mō tēnei wāhanga - I te tau 1915, i uru atu a Hale ki te American Field Service (AFS) hei kaihautū waka whakaora. I mahi ia i taua mahi me te ope French i Alsace-Lorraine i te Pakanga Tuatahi o te Ao mai i te Hui-tanguru 1915 ki te Mei 1916. Ko Hale tetahi o nga kaitohutohu AFS tuatahi e rua ki te whiwhi i te Croix de guerre mo tana mahi takoha. Whai muri i tana hokinga mai i Parani, ka uru a Hale ki te ope taua o Amerika ki te mahi i te haerenga ki Mexico
He aha? Ko te pakanga i te Pakanga Taitapa i whawhai ki nga ope paramilitary o Pancho Villa. I te tau 1917, i uru ia ki te Army Signal Corps.