where did the land for arlington cemetary come from
Arlington National Cemetery The national cemetery was established during the Civil War on the grounds of Arlington House, which had been the estate of the family of Confederate general Robert E. Lee's wife Mary Anna (Custis) Lee (a great-granddaughter of Martha Washington). The Cemetery, along with Arlington House, Memorial Drive, the Hemicycle, and the Arlington Memorial Bridge, form the Arlington National Cemetery Historic District, listed on the National Register of Historic Places in April 2014.[2][3] Like nearly all federal installations in Arlington County, it has a Washington, D.C. mailing address.
Tomb of the Unknown Soldier (Arlington) A civilian guard was first posted at the Tomb on November 17, 1925, to prevent, among other things, families from picnicking on the flat marble slab with views of the city. A military guard was first posted on March 25, 1926. The first 24-hour guard was posted on midnight, July 2, 1937. The Tomb of the Unknowns has been guarded continuously, 24 hours a day, 7 days a week, since that time.[23] Inclement weather,[24][25] terrorist attacks,[26] et cetera, do not cause the watch to cease.[27]