Tags: Military Structure.
Following the Gadsden Purchase the United States Army sent Major Enoch Steen and four companies of the 1st U. S. Dragoons (now the 1st U. S. Cavalry) to occupy the former site of the Mexican Presidio de Calabasas. Major Steen arrived on November 27 1856 and named his post Camp Moore. The dragoons put roofs on the old adobe structures and added a few new ones.