On April 4, 1865, Walcutt was recovered enough to command the 1st division of the XIV Corps, leading it in the grand review in Washington, D.C., until June 12. After hostilities ended he led his command to Louisville, Kentucky, where it was mustered out of the volunteer service that August. Walcutt served in the western department until he was mustered out of the Union Army on January 15, 1866. For his actions at Griswoldville, President of the United States Andrew Johnson appointed Walcutt to the grade of brevet major general of volunteers, to rank from March 13, 1865, and nominated him for commissioning to that grade on January 18, 1866, and the United States Senate confirmed the appointment on March 12, 1866.