Lengkepan kalimah ieu: Jarvis lahir tanggal 27 Juni 1845 di Afrika, Ohio. Salila Perang Sipil Amérika, anjeunna ngalayanan jeung 23rd Wisconsin Relawan Infantry Regiment of Union Army. Engagements anjeunna milu di antarana Battle of Grand Teluk, nu
Patempuran Port Gibson, Patempuran Jackson, Mississippi, Patempuran Champion Hill, Patempuran Big Black River Bridge, Ngepungna Vicksburg jeung Patempuran Spanish Fort.