Kammala jumla mai zuwa: A cikin aikinsa na baya, Smith ya yi aiki a matsayin jami'in a lokacin yakin Mutanen Espanya da Amurka da kuma bayan haka
Tashin hankali na Philippine karkashin Janar Leonard Wood da John J. Pershing. A shekarar 1910, Pershing ya nada shi a matsayin kwamandan 'yan sanda na Philippine kuma ya yi aiki a Fort Huachuca a matsayin kwamandan jami'in G, 5th Cavalry na Amurka daga 1912 zuwa 1914. A wannan matsayin ne ya yarda da mika wuya na Kanar Emilio Kosterlitzky, kwamandan sojojin tarayya na Mexico a Sonora, a ranar 13 ga Maris, 1913. A shekara ta 1918, an nada shi kwamandan Huachuca da na 10 na Amurka. Kafin ya yi ritaya, ya kuma kula da gina sansanin Owen Beirne, kusa da Fort Bliss, wanda ya zama abin koyi ga irin wannan sansanin da aka gina bayan karshen yakin duniya na farko.