Kammala jumla mai zuwa: Dorey ya tashi tare da rundunar zuwa Cuba a watan Afrilu 1898 a lokacin yakin Spain da Amurka kuma ya shiga cikin
Yaƙin El Caney da Siege na Santiago a watan Yuli na wannan shekarar. Daga baya ya shiga cikin Yakin Philippine-American kuma ya yi aiki a matsayin Mataimakin Rundunar Sojoji ta 4 a cikin ayyukan yaki da Moros a Zamboanga da Manila. Dorey ya yi umurni a matsayin Kyaftin din bataliya na 'yan leken asirin Philippine a Mindanao kuma an nada shi Mataimakin-Camp ga Manjo Janar Leonard Wood, wanda ya yi aiki a matsayin gwamnan lardin Moro, babban sansanin' yan tawayen musulmi. An ba Dorey lambar yabo ta farko ta Azurfa don jaruntakarsa a Philippines.