US Army General. Born in Cleveland, Ohio, he was appointed to the US Military Academy in 1954, graduating with the class of 1859 in July 1859, ranking 18 out of 22 cadets. He began his Army career as a Second Lieutenant with the 4th Infantry Regiment in Oregon and California, becoming promoted to First Lieutenant in May 1861. Reassigned to provost duty around Washington DC, he married Sarah Pollack of Harrisburg, Pennsylvania in early 1862. From March 1862 to November 1862, he participated in the Army of the Potomac's Peninsular Campaign, seeing action in Yorktown, Gaines's Mill, Malvern Hill, Second Bullrun, and at Antietam. He was promoted to Captain, 4th US Infantry, in June 1862, and was brevetted Major the next month for gallant and meritorious service during the Peninsular Campaign. In early July 1863, through the efforts of his friend BG George Crook, he was promoted to Colonel as the Commander of the 89th Ohio Volunteer Infantry Regiment. In early September 1863, the 89th Ohio joined the Army of the Cumberland moving into northwest Georgia, participating in the Battle of Chickamauga. For "gallant and meritorious services" at this battle, he was brevetted to Lieutenant Colonel, even though he had been captured by the Confederates. Carlton was held in Libby Prison, Richmond, until he was exchanged in March 1864. He rejoined his regiment to join in the Atlanta Campaign, and shortly after the fall of Atlanta, he was reassigned as Commander of Chattanooga, Tennessee, serving there until May 1865. Following the end of the Civil War, Carlton served another 32 years in the Army, including 13 different frontier forts. He was reduced in rank to Captain, Regular Army, in the 1867 reduction and reassigned to the 4th US Infantry. In 1869, he was appointed Professor of Military Science at Miami University, Ohio, and in October 1871, was reassigned to the 10th US Cavalry. In May 1876, he was promoted to Major, 3rd US Cavalry, serving in Wyoming, Nebraska, Arizona, Texas and Oklahoma. In April 1889, he was promoted to Lieutenant Colonel, 7th US Cavalry, and three years later was promoted to Colonel in January 1892, taking command of the 8th US Cavalry. In June 1897, he was promoted to Brigadier General. Two days later, he retired, after 43 years of service in the Army, spending much of his time between homes at Atlantic City, NJ and Cleveland, Ohio. His wife, Sadie, died in 1899, and he lived an additional 24 years, dying in 1923 at the age of 86.