List of California Civil War Union units

California State Volunteer Units 1861–1866
The following are California State Volunteer Units that were active between 1861–1866 serving in the Union Army, most west of the Rocky Mountains in place of Federal troops:

California Brigade
In 1861 four infantry regiments were recruited in Pennsylvania by Oregon Senator Edward D. Baker. Though made up of Pennsylvanians they were attributed to California. After the Battle of Ball's Bluff in October 1861 the brigade was renamed Philadelphia Brigade and the regiments were attributed to Pennsylvania as well.


 * 1st California Infantry Regiment - 71st Pennsylvania Infantry Regiment
 * 2nd California Infantry Regiment - 69th Pennsylvania Infantry Regiment
 * 3rd California Infantry Regiment - 72nd Pennsylvania Infantry Regiment
 * 5th California Infantry Regiment - 106th Pennsylvania Infantry Regiment

State militia

 * California State Militia units