The 3rd United States Infantry Regiment is a regiment of the United States Army. It currently has three active battalions, and is readily identified by its nickname, The Old Guard, as well as Escort to the President. The regimental motto is Noli Me Tangere (from Latin: – "Touch Me Not"). The regiment is a major unit of the Military District of Washington (MDW). The 3rd is the oldest regiment still active in the Regular Army, having been first organized as the First American Regiment in 1784. It has been the official ceremonial unit of the U.S. Army since 1948. Mission The regiment's mission is to conduct memorial affairs to honor fallen comrades and ceremonies and special events to represent the U.S. Army, communicating its story to United States citizens and the world. Although The Old Guard primarily functions in a ceremonial role, it is an infantry unit and thus required to meet standards for certification in its combat role. The unit also trains for its support role to civil authorities in a wide range of scenarios and for deployments in support of overseas contingency operations. On order, it conducts defense in support of civil authorities in the National Capital Region and deploys elements in support of overseas contingency operations. Memorial affairs and ceremonial mission Memorial affairs missions include standard and full honors funerals in Arlington National Cemetery and dignified transfers at Dover Air Force Base. Old Guard soldiers also perform all dignified transfers of fallen soldiers returning to the United States. The Old Guard's ceremonial task list includes full honor arrivals for visiting dignitaries, wreath ceremonies at the Tomb of the Unknowns, and full honor reviews in support of senior army leaders and retiring soldiers. Special events include the Twilight Tattoo, a weekly performance in the adjacent Washington area on Wednesday evenings from May to July, and the Spirit of America, a historical pageant presented at three national venues in September. The Old Guard is the only unit in the U.S. Armed Forces authorized, by a 1922 decree of the War Department, to march with fixed bayonets in all parades. This was granted in honor of the 1847 bayonet charge by the regiment during the Battle of Cerro Gordo in the war with Mexico. Specialty units In addition to the marching platoons, there are also elements of The Old Guard that serve special roles unique both to the regiment as