Mezue ahịrịokwu na-esonụ: Ndị agha 21st Army na-achịkwa ndị agha ala niile na Operation Overlord. Isi ihe ndị dị na 21st Army Group bụ ndị agha Britain nke abụọ na ndị agha mbụ nke Canada. A gụnyekwara ndị Poland na site na Normandy gaa n'ihu na obere Dutch, Belgian, na Czech. Otú ọ dị, ndị otu Lines of Communications bụ ndị Britain. Ndị agha ndị ọzọ nọ n'okpuru iwu nke 21st Army Group bụ ndị mbụ Allied Airborne Army, US Army mbụ maka Overlord, na US Ninth Army; n'ihi nkwụsị nke usoro iwu n'oge Agha nke Bulge na dị ka ihe nkwado maka ụgbọala na Rhine, Operations Veritable na Grenade. Ndị agha nke itoolu nke United States ọzọ na ndị agha ụgbọelu nke XVIII nke United States nọ n'okpuru iwu maka ịgafe osimiri Rhine Operations Plunder na
Ndị Varsity.