The District of California was a Union Army command department formed during the American Civil War. The district was part of the Department of the Pacific, the commander of the department also being District commander. The district was created as a separate command on July 1, 1864, after Irvin McDowell took command of the Department of the Pacific, relieving General Wright, who then remained as District of California commander. The District comprised the state of California and the areas of the Rogue River and Umpqua River in Southern Oregon. Its headquarters were in San Francisco, co-located with those of the Department of the Pacific. On March 14, 1865, the District of Oregon was extended to include the entire state of Oregon, removing the Rogue River and Umpqua River areas from the District.

District of California commanders

On June 27, 1865, the Military Division of the Pacific was created under Major General Henry W. Halleck, replacing the Department of the Pacific. It consisted of the Department of California and the Department of the Columbia, which replaced the District of Oregon. George Wright, now a U. S. Army Brigadier General, was assigned to command the new Department of the Columbia.

Oregon posts in the District of California 1861-1865

Posts in the District of California

Events, skirmishes, and battles

1861 1862 1863 1864 1865