Fortifications

Fort Snyder (1861-1865) - A Union U.S. Civil War Fort established in 1861 in Southeast Washington DC. Named Fort Snyder probably after Bvt Major George W. Snyder, who served at Charleston Harbor, Fort Sumter during the bombardment, and who took sick and died after the Battle of Bull Run.

Established in 1861 as an outwork to Fort Stanton with a perimeter of 210 yards and emplacements for eight guns.   Location:  14th Place and Congress Place in Southeast Washington DC.  ( Source - Fortwiki )