1862 年,南北戰爭爆發之後 佢入咗北軍 隊長係第 31 部愛荷華州志願步兵連隊嘅隊長 佢喺1864年被提升到少校,並一直服役到戰爭結束. 佢參與 Chickasaw Bayou, Arkansas Post, Siege of Vicksburg, Lookout Mountain, Missionary Ridge, Kennesaw Mountain, Atlanta 嘅戰鬥
同埋<unk>斯伯勒嘅",雪曼向海行"