Ka cika wannan jumlar: An haifi Arnold a Gainesville, Florida, na farko cikin 'ya'ya biyar na Manjo Albert C. "AC" Arnold da tsohuwar Irene Dominick. Wani mai ba da labari mai zurfi, AC Arnold ya yi yaƙi a cikin Yaƙin Boer a gefen Boers; ya shiga Rundunar Sojoji ta Bakwai a matsayin soja; ya kasance mai caca na kogi; ya yi yaƙi tare da Brigadier Janar John J. Pershing a kan
An ba shi lambar yabo ta musamman don ayyukansa tare da 1/326 Infantry a Château-Thierry a lokacin Yaƙin Duniya na I; ya tafi makarantar lauya; kuma an sanya shi zuwa matsayi da yawa a cikin sojojin zaman lafiya kafin ya koma na bakwai a Fort Lewis, Washington, inda ya mutu a 1932.