 In 1863, the partially replenished 5th Ohio fought in the Army of the Potomac at Chancellorsville and then served in the Gettysburg Campaign.Transferred later in the summer to the Western Theater and becoming part of the XX Corps under Joseph Hooker, the 5th participated in the Battle of Lookout Mountain near Chattanooga, Tennessee.The following year, the 5th served in the forces under William T. Sherman in the Atlanta Campaign and was part of Sherman's March to the Sea and the subsequent operations against Confederate-held Savannah, Georgia.