Kammala wannan jumla: A lokacin yakin, ya yi aiki a matsayin Shugaban Ordnance a cikin Sojojin Potomac, Ma'aikatar Ohio da Sojojin Cumberland. Ya bambanta a cikin yakin Fort Pulaski, Georgia, a yakin Chickamauga, yakin daji da kuma
Yaƙin na biyu na tashar Ream (New Market Heights). A ranar 26 ga Yuni, 1902 ko 8 ga Yuli, 1902, Porter ya karbi lambar yabo don yakin Chickamauga kamar yadda aka bayyana a cikin ambaton da aka ambata a kasa. A cikin shekarar da ta gabata na yakin, ya yi aiki a kan ma'aikatan Janar Ulysses S. Grant, daga baya ya rubuta wani tarihin rayuwa na kwarewa, "Campaigning With Grant" (1897).