Albemarle Cady was a career United States Army officer who served in the Second Seminole War, Mexican–American War, First Sioux War and the American Civil War. During the Civil War, he was briefly lieutenant colonel of the 7th Infantry Regiment. He then served in administrative positions in the Department of the Pacific, including the District of Oregon. He received brevet appointments for his service in the Mexican–American War and the Civil War. He retired from the Regular Army as a colonel on May 18, 1864. On July 17, 1866, President Andrew Johnson nominated and on July 26, 1866, the United States Senate confirmed the appointment of Cady as a brevet brigadier general in the Regular Army, to rank from March 13, 1865.

The District of Oregon was a Union Army command department formed during the American Civil War.