The Defense Commissary Agency (DeCA), headquartered at Fort Lee (Virginia), is an agency of the United States Department of Defense (DoD) that operates nearly 240 commissaries worldwide. American military commissaries sell groceries and household goods to active-duty, Guard, Reserve, and retired members of all eight uniformed services of the United States and eligible members of their families at cost plus surcharge, saving authorized patrons thousands of dollars compared to civilian supermarkets. History The commissary benefit is not a recent innovation. Sales of goods from commissary department storehouses to military personnel began in 1825, when U.S. Army officers at specified posts could make purchases at cost for their personal use; by 1841, officers could also purchase items for members of their immediate families. However, the modern era of sales commissaries is considered to have actually begun in 1867, when enlisted men received the same at-cost purchasing privileges officers had already enjoyed for four decades. No geographic restrictions were placed upon these sales; the commissary warehouse at every Army post could become a sales location, whether they were located on the frontier or near a large city. From the start, commissaries were meant to take on-post retail functions out of the hands of civilian vendors and post traders and allow the Army to "care for its own." The stores provided food beyond what was supplied in the official rations, and the savings they provided supplemented military pay. The modern concept of commissary sales stores, which were established to benefit military personnel of all ranks by providing healthful foods at cost, reached its 150th anniversary on July 1, 2017. The commissary retail function developed and grew, roughly parallel to the development of the retail grocery industry. The commissaries’ 82-item stock list of 1868 was comparable to the stock assortment in a typical civilian dry goods grocery store at that time. Commissaries kept pace with developments in civilian supermarkets, and the average commissary today has more than 12,000 line items; the largest stores have several thousand more. The list of eligible shoppers has also grown. Originally, only active-duty Army personnel could shop. Today, personnel in all services, including the Coast Guard and National Guard and Reserves, may shop in the commissary on any U.S. military installation, around the world. Military retirees – those who have served in uniform 20 years or more – were first allowed to make commissary purchases in 1878, and they