Trapier was then temporarily given command of the 1st Division of the I Corps on April 14 when its commander, Charles Clark, fell ill.[1][4] When Clark recovered, Trapier was then given temporary command of the 2nd Division of Bragg's II Corps, and led it in this capacity during the Battle of Farmington.[5] Trapier's performance during the Union siege at Corinth was highly criticized and Bragg, now the army commander, ordered him relieved of command and sent him home for duty in South Carolina.