Richd. Drum to James H. Carleton, December 19, 1861

Col. JAMES H. CARLETON, First Infantry California Volunteers,

SIR: The general commanding the department directs me to inform you that the proposition submitted for the consideration of the General-in-Chief, recommending the recapture of forts surrendered to the rebels in Arizona, having been approved, you are desired to communicate to these headquarters as early as possible a statement in full of what is necessary for the complete equipment of the force to be placed under your command. This force will consist of the First Regiment of Infantry and battalion of First Cavalry Calıtornia Volunteers, and a battery of four light guns under the command of Lieutenant Shinn, Third Artillery. The general has given directions for the transportation necessary for this movement to be forwarded to San Pedro, where the trains will be organized under the immediate direction of Captain Moore, assistant quartermaster, who will report to you for duty. Directions have also been given for the shipment to the mouth of the Colorado River of 200,000 rations of subsistence stores. The troops to be employed on this expedition and now on duty in the southern district will þe relieved by the Fifth Regiment of Infantry and one or two squadrons of the Second Cavalry California Volunteers.

Very respectfully, your obedient servant,