Early in 1864, Hecker resigned, leaving Salomon in permanent command of the regiment, although still as a lieutenant colonel. Salomon led the regiment during the Atlanta Campaign and through the capture of Atlanta. Assigned to deliver messages to Nashville, he missed the famous march to the sea. In December 1864, he rejoined the regiment and finished out the war with them. On March 13, 1865, Salomon received a promotion to brigadier general on for his “distinguished gallantry and meritorious service.”