Dee ihe ga-aga n'ihu na paragraf a - Amụrụ Armstrong na 11 June 1897 ma gụrụ akwụkwọ na Cheltenham College. Mgbe ọ gụsịrị akwụkwọ na Royal Military Academy Sandhurst, e nyere ya ọrụ na East Surrey Regiment na Eprel 1915. E zigara ya na ndị agha na-eji egbe egbe, ọ rụrụ ọrụ na France site na 1916 ruo 1918, ebe ọ merụrụ ahụ ugboro abụọ na, na March 1918, mere ka ọ bụrụ onye agha agha. A kpọghachitere ya na Disemba 1918, o jere ozi na North Russia na 1919 ma nye ya obe ndị agha maka obi ike. Ọ nọ na Mesopotemia 1920-21
na Indian North West Frontier 1930-31, na-eje ozi ọtụtụ n'ime ọrụ ya n'etiti agha na 1st Battalion, East Surrey Regiment na Egypt, Sudan, Hong Kong na India.