 Nyorai kupfuurira kweiyi ndima - Pana 22 Aug 1861, Rice akabatana ne14th Massachusetts Infantry uye akagadzwa kaputeni. Akakurumidza kuendeswa ku19th Massachusetts Infantry Regiment kuti atungamirire Kambani F. Nechikamu ichocho akabatanidzwa muhondo dzeHondo yeVanhu ye: Balls Bluff, Siege yeYorktown, Fair Oaks, Savage Station, Glendale, uye Malvern Hill. Akakwidziridzwa pachinzvimbo chechikuru musi wa7 Gunyana 1862 uye akarwa paAntietam gare gare munaGunyana 1862, uye Hondo yeFredericksburg Zvita 11-13, 1862. Nokuda kwezviito zvake paHondo yeGettysburg mukurwisa Picketts Charge, akapiwa Medal of Honor muna 1891. Akaitwa lieutenant colonel 28 Feb 1864, akatungamira chikwata chake muRapidan Campaign, hondo dzeBristoe Station, Blackburns Ford, Robinsons Cross Roads, uye Mine Run. Akatungamirira 19th muHondo yeWilderness musi waMay 57, 1864 uye muhondo yeLaurel Hill musi waMay 8, 1864. Akakuvadzwa ndokutorwa muhondo yeSpotsylvania Court House, 12 May 1864. Paakanga achiendeswa somusungwa musi waMay 23, akatiza nokugura dhoo remotokari inotakura zvinhu ndokusvetuka kubva mairi apo chitima chaifamba pa15 mph. Akasvika pamiganhu yeUnion, pedyo norwizi rweOhio, mazuva makumi maviri namatatu gare gare. Akasimudzirwa kuva colonel musi wa 28 Chikunguru 1864. 