From findagrave:
Civil War Union Brevet Major General. At outbreak of the Civil War, he commanded the Stockton Blues of the California Militia and was appointed Colonel. In the fall of 1861, his regiment was ordered to Utah Territory to protect the Overland Stage and Pacific Telegraph against the Confederacy. In 1862, he established Fort Douglas Utah, secured the impending Confederate threats and incursive Indians. In March 1863, he was promoted Brigadier General in command of Utah Military and led the Powder River expedition to quell the Sioux and Comanche. By late 1865, he commanded regiments of Union and ex-Confederate soldiers from Colorado to the Dakotas, which fought against hostile Indians on the Western range. Upon being mustered out of the service in 1866, he was brevetted Major General of US Volunteers. He settled in Utah where he established the first daily newspaper, the first silver mine and founded the town of Stockton.

Located in the Fort Douglas Post Cemetery.