Partially printed DS on vellum, one page, 15.75 x 19.25, April 30, 1862. A commission appointing James H. Carleton as Brigadier General of Volunteers. Carleton (1814–1873) began his military career with service during the Aroostook and Mexican-American Wars. His experience on the Western frontier led to his appointment to the California Volunteer Regiment, which he led in the famous “California Column” across Arizona, New Mexico, and into Texas. When an expected Confederate invasion of New Mexico failed to materialize, many of the Union forces in the region were sent back East, though Carleton remained and, in August 1862, was placed in command of the Department of New Mexico. In this capacity, Carleton battled mainly against Indian raids, aided by his second-in-command, the famed scout Christopher “Kit” Carson. In 1865, as the war neared its end, he was breveted as a major general, and, after the war, served as Lieutenant Colonel of the 4th Cavalry. He also authored a number of military memoirs, including The Battle of Buena Vista (1848) and The Mountain Meadows Massacre (1859). Countersigned by Edwin M. Stanton as Secretary of War. The embossed blue paper seal remains intact at upper left. In fine condition overall, with intersecting folds, scattered marginal soiling, and light staining (most of which can easily be matted out if desired). Lincoln’s signature is bold, dark, and perfectly penned. An uncommonly notable military association! Auction LOA John Reznikoff/PSA/DNA and R&R COA.