Mezue ahịrịokwu na-esonụ: Ọ laghachiri n'ọrụ agha tupu Agha Worldwa nke Abụọ, ebe a na-enye ya ọrụ dịka onye ọrụ ụgbọelu na Royal Air Force Volunteer Reserve na 25 Eprel 1939. Na 17 June 1940, mgbe Marshal Philippe Pétain kwusịrị na ya bu n'obi ịchọ
N'oge agha ahụ, Air-Vice Marshal Arthur Barratt, Air Officer Commanding-in-Chief British Air Forces na France, zigara Grinnell-Milne na ozi iji nyefee ndị isi nke French Air Force akwụkwọ ozi, na-ekwupụta mkpebi Britain iji gaa n'ihu na-alụ ọgụ, ma na-agba ha ume ime otu ihe ahụ na North Africa. A họpụtara Grinnell-Milne ka ọ bụrụ onye ọrụ njikọ ndị Britain na Onye isi ndị agha France bụ Joseph Vuillemin, ma nwee igwe na-ebugharị redio, akara oku na koodu. Grinnell-Milne gara Bordeaux, wee gaa GHQ French Air Forces na Agen. N'ebe ahụ, Vuillemin ji mwute gwa ya na ọ malitela usoro nke ịnyefe ndị mmadụ na ụgbọ elu na North Africa, mana ugbu a enwetala iwu ịkwụsị njem niile. Grinnell-Milne chọpụtara na ọtụtụ n'ime ndị isi ndị isi ndị isi ahụ gbara arụkwaghịm na ọdịnihu ha, na-egbochi, ma ọ bụ na-emegide ha, ọ bụ ezie na ọ chọpụtara na ọtụtụ n'ime ndị isi na ụmụ nwoke na-eto eto na-achọsi ike ịhapụ England. Ọ hapụrụ France n'abalị iri na asatọ nke ọnwa Juun n'ụgbọ mmiri. Ozugbo ọ laghachitere na London, a họpụtara ya onye ọrụ mmekọrịta na Free French General Charles de Gaulle, na-anọnyere ya maka ọnwa anọ sochirinụ, ma sonye na agha nke Dakar na Gabon. E buliri ya n'ọkwa onye ọrụ ụgbọelu na 3 Ọgọst 1941. A chụrụ Grinnell-Milne n'ọrụ na RAF (nke bụ eziokwu na ọ gbara arụkwaghịm na ọrụ ya), na-ejigide ọkwa ya dị ka onye ọrụ ụgbọelu na 20 Julaị 1944. Mgbe nke ahụ gasịrị ọ laghachiri na BBC, nọrọ ebe ahụ ruo 1946.