Mezue ahịrịokwu na-esonụ: O jiri oge ka ukwuu n'agha ahụ rụọ ọrụ dị iche iche, ma lụọ Victoire Marion Williams-Freeman na 1942. E buliri ya n'ọkwa lieutenant colonel, a họpụtara ya onye isi ndị agha nke 1st Battalion, Manchester Regiment, na Machị 1944. Ndị agha ahụ (nke bụbu ndị agha nke isii, ndị agha Territorial tupu e degharịa ya dị ka ndị agha nke mbụ na Mee 1942), na-eje ozi dị ka ndị agha egbe egbe nke 53rd (Welsh) Infantry Division, nke mbụ nke TA nke Major General Robert Ross nyere iwu, a zụrụ ya nke ọma na ọ fọrọ nke nta ka ọ ghara ịdị mma maka ọrụ, mana Harington mere ka ọ dịrị njikere ngwa ngwa. Ogbe ndị agha ahụ, tinyere ndị otu nne na nna ya, rutere na Normandy, France, na ngwụcha ọnwa Juun, izu atọ ka ndị Normandy rutere, ma tinye aka na ọgụ siri ike n'oge niile Agha Normandy, na ọtụtụ n'ime agha ndị sochirinụ.
na-alụ ọgụ na Western Europe, ruo mgbe Harington hapụrụ iwu na etiti Septemba 1944, mgbe ọ ghọrọ General Staff Officer Grade 1 (GSO1) na 53rd Division HQ. Ọ nọgidere n'ọkwa a ruo Mee 1945. Maka ọrụ ya dị ka CO nke 1st Manchesters, e nyere Harington DSO Distinguished Service Order na mbido 1945.