Rubuta ci gaba ga wannan sakin layi - An ba shi izini na farko na Kamfanin D, 2nd Vermont Infantry, a ranar 20 ga Mayu, 1861, amma ya yi murabus a ranar 5 ga Nuwamba, 1861, saboda dalilai na kiwon lafiya. Ya koma kasuwancin mahaifinsa, kuma ya koma yankin Washington, yana sayar da magunguna ga sutlers da likitocin soja. Sa'an nan kuma ya karbi matsayi a matsayin babban jami'in na 10th Vermont Infantry a ranar 26 ga Agusta, 1862. An gabatar da shi zuwa ga Lieutenant Colonel a ranar 17 ga Oktoba, 1862, kuma ya dauki umurnin rundunar a matsayin colonel a ranar 26 ga Afrilu, 1864, ya maye gurbin Albert B. Jewett, wanda ya yi murabus. Ya umurci rundunarsa a yakin daji, Spotsylvania, Arewacin Anna, Totopotomy Creek
, Cold Harbor, da kuma Cedar Creek.