He arrived in Monterey, California, and assumed command of Battery F, 3rd U.S. Artillery, with orders to complete Fort Mervine, which was renamed Fort Halleck.
Han ankom til Monterey i Californien og overtog kommandoen over Batteri F i 3. artilleriregiment med ordre om at færdiggøre Fort Mervine, som blev omdøbt ti Fort Halleck.