Tuhia he tomokanga mō tēnei wāhanga - I te Pakanga o te Somme i te Mahuru 1916, i uru a Dalton ki ngā whawhai toto i te Pakanga o Ginchy
, i mate ai, i whara ai rānei te 4,000 o ngā Irish. Ko Tom Kettle tētahi o ngā tupapaku, he mema Paremata nō mua, he hoa whaiaro hoki o te papa o Dalton me Emmet. I whakawhiwhia a Dalton ki te Cross Military mo tana whanonga i te pakanga. Whai muri i tera ka tukuna ia ki te 6th Battalion, Leinster Regiment, ka tukuna ki Salonika ka Palestine, i reira ia i whakahau ai i tetahi kamupene ka tirotiro i tetahi kura kaipatu i El Arish. I te tau 1918 i tukuna ano a Dalton ki Parani, a i te marama o Hurae i whakatairangahia ia hei rangatira, hei kaiwhakaako.