Arlington House, The Robert E. Lee Memorial
By early 1864, the military cemeteries of Washington, D.C., and Alexandria, Virginia, were rapidly filling with war dead. Quartermaster General of the United States Army Montgomery C. Meigs proposed using of the Arlington estate as a cemetery. United States Secretary of War Edwin M. Stanton approved the establishment of a military cemetery on June 15, 1864, creating Arlington National Cemetery. Meigs believed that since Lee had committed treason in deciding to fight against the Union, denying Lee use of the mansion after the war was a rough form of justice. Meigs decided that a large number of burials should occur close to Arlington House to render it unlivable. Officers were to be buried next to the main flower garden south of the house, and the first burial occurred here on May 17. Meigs ordered that additional burials commence immediately on the grounds of Arlington House in mid-June. When Union officers bivouacked in the mansion complained and had the burials temporarily stopped, Meigs countermanded their orders and had another 44 dead officers buried along the southern and eastern sides of the main flower garden within a month.
Arlington National Cemetery
With more than 400,000 interments, the cemetery has the second-largest number of burials of any national cemetery in the United States. The largest of the 130 national cemeteries is the Calverton National Cemetery, on Long Island, near Riverhead, New York, which conducts more than 7,000 burials each year.
In addition to in-ground burial, the cemetery also has one of the larger columbaria for cremated remains in the country. Four courts are currently in use, each with 5,000 niches. When construction is complete, there will be nine courts with a total of 50,000 niches; capacity for 100,000 remains. Any honorably discharged veteran is eligible for inurnment in the columbarium, if s/he served on active duty at some point in her/his career (other than for training).