Fort Runyon, Civil War fort in Arlington County, United States
Fort Runyon was a pentagonal earthwork fortification controlling access via the Columbia Turnpike and Alexandria and Loudon Railroad with a 1500-yard perimeter.
The Union Army constructed Fort Runyon in 1861 following Virginia's secession, making it the largest fort among Washington's defenses during the American Civil War.
The fort's construction involved soldiers from New Jersey regiments and the 7th New York Volunteer Infantry, representing the cooperation of multiple Union state forces.
A historical marker in Arlington indicates the former location of Fort Runyon, which is now intersected by Interstate 395 near the Pentagon.
The fort required over 2,000 personnel, including 300 artillerymen, to maintain its defensive position at the southern approach to the Long Bridge.
Location: Arlington County
Inception: 1861
Part of: Civil War defenses of Washington, D.C.
GPS coordinates: 38.86528,-77.05167
Latest update: March 5, 2025 14:06
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