Fort Myer is the previous name used for a U.S. Army post next to Arlington National Cemetery in Arlington County, Virginia, and across the Potomac River from Washington, D.C. Founded during the American Civil War as Fort Cass and Fort Whipple, the post merged in 2005 with the neighboring Marine Corps installation, Henderson Hall, and is today named Joint Base Myer–Henderson Hall.
Fort Ethan Allen was an earthwork fortification that the Union Army built in 1861 on the property of Gilbert Vanderwerken in Alexandria County, Virginia, as part of the Civil War defenses of Washington. The remains of the fort are now within Arlington County's Fort Ethan Allen Park.
Fort Richardson was a detached redoubt that the Union Army constructed in September 1861 as part of the Civil War defenses of Washington. The Army built the fort shortly after its rout at the First Battle of Bull Run (Manassas) in late July 1861. The Army named the fort after General Israel B. Richardson, whose division had been deployed to defend the City of Washington against attack by way of the Columbia Turnpike.
Fort Scott was a detached lunette constructed in May 1861 to guard the south flank of the defenses of Washington during the American Civil War. It was named for General Winfield Scott, who was then General-in-Chief of the Union Army. An historic marker and a small remnant of the fort are the only evidence of the site of the fort on the grounds of what is now Fort Scott Park in Arlington County, Virginia.
Fort Washington, located near the community of Fort Washington, Maryland, was for many decades the only defensive fort protecting Washington, D.C. The original fort, overlooking the Potomac River, was completed in 1809, and was begun as Fort Warburton, but renamed in 1808. During the War of 1812, the fort was destroyed by its own garrison during a British advance.
Fort Ward is a former Union Army installation now located in the city of Alexandria in the U.S. state of Virginia. It was the fifth largest fort built to defend Washington, D.C. in the American Civil War. It is currently well-preserved with 90-95% of its earthen walls intact.
Fort Reynolds was a Union Army redoubt built as part of the defenses of Washington, D.C., in the American Civil War.
The Arlington Line was a series of fortifications that the Union Army erected in Alexandria County, Virginia, to protect the City of Washington during the American Civil War.
Fort Corcoran was a wood-and-earthwork fortification constructed by the Union Army in northern Virginia as part of the defenses of Washington, D.C. during the American Civil War. Built in 1861, shortly after the occupation of Arlington, Virginia by Union forces, it protected the southern end of the Aqueduct Bridge and overlooked the Potomac River and Theodore Roosevelt Island, known as Mason's Island.
Fort Runyon was a timber and earthwork fort constructed by the Union Army following the occupation of northern Virginia in the American Civil War in order to defend the southern approaches to the Long Bridge as part of the defenses of Washington, D.C. during that war. The Columbia Turnpike and Alexandria and Loudon Railroad ran through the pentagonal structure, which controlled access to Washington via the Long Bridge. With a perimeter of almost 1,500 yards (1,400 m), and due to its unusual shape it was approximately the same size, shape, and in almost the same location as the Pentagon, built 80 years later.
Fort Jackson was an American Civil War-era fortification in Virginia that defended the southern end of the Long Bridge, near Washington, D.C. Long Bridge connected Washington, D.C. to Northern Virginia and served as a vital transportation artery for the Union Army during the war. Fort Jackson was named for Jackson City, a seedy suburb of Washington that had been established on the south side of the Long Bridge in 1835. It was built in the days immediately following the Union Army's occupation of Northern Virginia in May 1861. The fort was initially armed with four cannon used to protect the bridge, but these were removed after the completion of the Arlington Line, a line of defenses built to the south. After 1862, the fort lacked weapons except for small arms and consisted of a wooden palisade backed by earthworks. Two cannon were restored to the fort in 1864 following the Battle of Fort Stevens. The garrison consisted of a single company of Union soldiers who inspected traffic crossing the bridge and guarded it from potential saboteurs.
Fort Lyon was a timber and earthwork fortification constructed south of Alexandria, Virginia, as part of the defenses of Washington, D.C. during the American Civil War. Built in the weeks following the Union defeat at Bull Run, Fort Lyon was situated on Ballenger's Hill south of Hunting Creek, and Cameron Run, near Mount Eagle. From its position on one of the highest points south of Alexandria, the fort overlooked Telegraph Road, the Columbia Turnpike, the Orange and Alexandria Railroad, the Little River Turnpike, and the southern approaches to the city of Alexandria, the largest settlement in Union-occupied Northern Virginia.
Fort Ellsworth was a timber and earthwork fortification constructed west of Alexandria, Virginia, as part of the defenses of Washington, D.C. during the American Civil War. Built in the weeks following the Union defeat at Bull Run, Fort Ellsworth was situated on a hill north of Hunting Creek, and Cameron Run,. From its position on one of the highest points west of Alexandria, the fort overlooked the Orange and Alexandria Railroad, the Little River Turnpike, and the southern approaches to the city of Alexandria, the largest settlement in Union-occupied Northern Virginia.
Arlington Ridge is a neighborhood in Arlington County, Virginia. It is bordered on the north by The Pentagon, on the west by the Army Navy Country Club, and on the south the Alexandria. The main thoroughfare is the eponymous Arlington Ridge Road, a mansion-lined boulevard that, due to its high elevation, offers views of Washington, D.C., and the surrounding areas.
Fort Willard is a former Union Army installation now located in the Belle Haven area of Fairfax County in the U.S. state of Virginia. It is currently undergoing preservation treatment to protect its earthen walls and trenches.
Fort O'Rourke is a former Union Army installation now located in the Belle Haven area of Fairfax County in the U.S. state of Virginia. It was the southernmost fort built to defend Washington, D.C. in the American Civil War.
Fort Craig was a small lunette that the Union Army constructed in September 1861 in Arlington County in Virginia during the American Civil War. The lunette was part of the Civil War defenses of Washington.
Fort Tillinghast was a small lunette that the Union Army constructed in Alexandria County, Virginia, as part of the Civil War defenses of Washington. Fort Tillinghast stood about 0.6 miles away from Arlington House, the Union-occupied estate of Confederate General Robert E. Lee.
Nauck is a neighborhood in the southern part of Arlington County, Virginia, known locally as Green Valley. It is bordered by Four Mile Run and Shirlington to the south, Douglas Park to the west, I-395 to the east, and Columbia Heights and the Army-Navy Country Club to the north. The southeastern corner of the neighborhood borders the City of Alexandria.
Fort Farnsworth is a former Union Army installation now located in the Huntington area of Fairfax County, Virginia. It was a timber and earthwork fortification constructed south of Alexandria, Virginia as part of the defenses of Washington, D.C. during the American Civil War. Nothing survives of the fort's structure as the Huntington Station of the Washington Metro occupies Fort Farnsworth's former hilltop site.
