Mezue ahịrịokwu na-esonụ: Gentry gụsịrị akwụkwọ na Duntroon na 1919 ma zigara ndị New Zealand Staff Corps. E zigara ya na ndị agha Britain nke India ruo afọ abụọ, na-eje ozi na North-West Frontier n'oge mkpọsa Waziristan na
Nnupụisi ndị Moplah. Mgbe ọ laghachiri na New Zealand, o nwere ọtụtụ ndị ọrụ na Central Military District ma bulie ya n'ọkwa onye isi n'afọ 1926. N'afọ 1934, e zigara ya England ka ọ nọrọ na Corps of Royal Engineers ruo ọnwa iri na asatọ, ọ gakwara ụlọ akwụkwọ injinịa. O jere ozi na General Headquarters na Wellington dị ka onye ọrụ ndị ọrụ, ndị injinia, tupu ọ laghachi England ịga Staff College na Camberley, gụsịrị akwụkwọ na 1939.