Arlington National Cemetery, in Arlington, Virginia, is an American military cemetery established during the American Civil War on the grounds of Arlington House, formerly the estate of the family of Robert E. Lee's wife Mary Anna Custis Lee, a descendant of Martha Washington. The cemetery is situated directly across the Potomac River from Washington, D.C., near to the location of The Pentagon, and is served by the Arlington Cemetery station on the Blue Line of the Washington Metro system.

Veterans from all America's wars are interred in the cemetery, from the American Revolution through to the military actions in Afghanistan and Iraq. Pre-Civil War dead were reinterred after 1900.

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