James H. Carleton to E. A. Rigg, February 5, 1862

Lieut. Col. J. R. WEST, First Infantry California Volunteers, Camp Wright (or more probably at Fort Yuma, Cal.): COLONEL: If, when this reaches you, you have gone beyond Camp Wright, return without delay and assume command of that camp until further orders. If you are already at Camp Wright, assume command of that camp and remain there until otherwise directed. I desire that you have the troops in that camp put into the highest state of efficiency and kept ready for field service at an hour’s notice. Should Captain Roberts’ company arrive at Camp Wright from San Diego, detain it there as a part of your command. The ambulance which belongs to Fort Yuma you will leave at Fort Yuma, if this letter does not reach you until you have arrived there, otherwise you will have it sent there without delay. I am, colonel,

respectfully, your obedient servant,