The regiment’s new commanding officer, whom Caputo describes as being “broad-backed” and “thick-necked.” Nickerson takes command in late August after Colonel Wheeler is sent back to the United States due to illness. Nickerson is loud and profane but likes socializing with the junior officers and enlisted men. He is also subject to quick, violent shifts in mood. In his good moments, he is warm, affectionate, and works hard at being a combat officer. In his foul moods, he delights in being unreasonable and confuses petty objectives for important ones. He also demands a great deal of work from his soldiers.