The brigade was involved in several engagements during the siege of Petersburg, including the defense of the Union position along the Vaughan Road against a much larger force during the Battle of Vaughan Road, which was related to the larger Battle of Peebles' Farm. Davies's brigade participated in raids on the Weldon Railroad in December 1864. Davies was wounded during the Battle of Hatcher's Run on February 6, 1865. After Gregg's resignation in early February 1865, the brigade had temporary commanders, including Davies between March 14 and March 27, 1865. On March 8, 1865, President Abraham Lincoln nominated Davies for the award of the grade of brevet major general of volunteers to rank from October 1, 1864 for his role in the Battle of Vaughan Road during the Battle of Peebles' Farm. The U.S. Senate confirmed the award on March 10, 1865.