Fort Bliss underwent its first major expansion between 1913 and 1917 as its focus shifted from infantry to cavalry. This change coincided with a buildup of forces and facilities to support a full cavalry regiment protecting the border region during the Mexican Revolution (1910-1920). In 1916, Fort Bliss became the major staging area and supply base for General Pershing’s Punitive Expedition into Mexico in pursuit of Francisco “Pancho” Villa. When 2nd Lieutenant George S. Patton arrived at Fort Bliss in September 1915, he described it as “quite new looking. Most of the buildings have been erected within the year…for a big post it is quite compact. There are no trees at all.” More than fifty structures survive from this period of growth. Following the original 1890s plan, twenty-five new officers bungalows further defined the western edge of the parade field, filling gaps and extending Officers’ Row to the north and south. Nine new two-company barracks lined the east side of the parade, with each pair backed by a supporting kitchen and mess (Buildings 11, 12, 112-118, and 15, 122, 123, 125, 127). Building 1, the new hospital, fronted a small medical complex that included the Isolation Ward and an ambulance shed (Buildings 4 and 5). Beyond these were many wood structures reflecting the increasing presence of cavalry, including horse stables, smithies, and hay and storage sheds, most of them razed by the end of World War Two in 1945.