A hundred years ago, the US Army moved by horse - The Cavalry were mounted; the field artillery hauled their guns drawn by limbers hitched up to a team of six horses and wagons were pulled by mules. The horse power need was great, so in the early 1900s, the War Department petitioned Congress and as a result the Remount Service was started finally. In addition to horses, the US Army also needed mules and during WW II the need for dogs also increased. In doing the research for the book "Images of America - Fort Myer" the US Army's Remount Service surfaced ... initially it consisted of three depots: Fort Reno, Oklahoma that the famous caparisoned horse, Black Jack (named for General of the Armies, John J. "Blackjack" Pershing) was the last Quartermaster issued horse that was branded by the US Army - the brand "US" on his left shoulder and serial number "2V56" on the left side of his neck. With the anticipation of being drawn into World War II, a decision was made by Chief of Staff of the Army, General George C. Marshall to mechanize the US Army. Thus horses were of little use as the army went from four hooves to four tires or even two tracks. The remaining depots were turned over to the US Department of Agriculture on July 01 1948. They were either turned into other uses, abandoned or as in the case of the depot at Front Royal, VA, the Smithsonian Institution acquired the main parcel of land, with the remainder in use to train dogs by the US Customs Service and the other portion by the 4H clubs of America. Based on the strict requirements of the US Army for its horses, the horse industry within the United States benefited greatly. When the US Army's Remount Service was dissolved, many of the horses were auctioned off and became breeding stock across America. Another example of how the US Army has contributed immensely to the United States.