アービン・マクドウェル
On July 1, 1876 Gen. Irvin McDowell, formerly commander of the Department of the Pacific was for a second time assigned to the command of the Pacific coast Division, which comprised also the Department of the Columbia, commanded by Brig. Gen. Oliver O. Howard, and the Department of Arizona, commanded by Col. O. B. Willcox, 12th Infantry Regiment.