Mezue ahịrịokwu na-esonụ: N'oge Agha nke Somme na September 1916, Dalton tinyere aka n'ọgụ ọbara n'oge agha
Agha Ginchy, nke e gburu ma ọ bụ merụọ ihe karịrị ndị Irish 4,000 ahụ. Otu n'ime ndị ahụ nwụrụ bụ Tom Kettle, onye bụbu onye otu mba na-akwado ọchịchị na onye enyi nke nna Dalton na Emmet. E nyere Dalton ihe nrite Military Cross maka omume ọma ya n'agha ahụ. Mgbe nke ahụ gasịrị, a kpọfere ya na Battalion nke isii, Leinster Regiment, wee ziga ya na Salonika mgbe ahụ Palestine, ebe o duziri otu ụlọ ọrụ wee lezie ụlọ akwụkwọ sniper na El Arish. N'afọ 1918, a kpọghachiri Dalton ọzọ na France, na July a buliri ya n'ọkwa onye isi, na-eje ozi dị ka onye nkuzi.