Department of the East • Department of Washington, D.C. • Department of the Potomac • Military District of Washington • Department of the Rappahanock • Defenses of Washington, D.C. • Department of Washington
Army of the Potomac • XXII Corps
Fort Washington • Fort Foote • Battery Rodgers
Fort Willard • Fort O'Rourke • Fort Weed • Fort Farnsworth • Fort Lyon • Fort Ellsworth • Fort Williams • Fort Worth • Fort Ward • Battery Garesche • Fort Reynolds • Fort Barnard • Fort Berry • Fort Richardson • Fort Albany • Fort Scott • Fort Runyon • Fort Jackson • Fort Craig • Fort McPherson • Fort Tillinghast • Fort Cass • Fort Whipple • Fort Woodbury • Fort Morton • Fort Corcoran • Fort Haggerty • Fort Bennett • Fort Strong • Fort C.F. Smith • Fort Munson • Fort Ramsey • Fort Buffalo • Fort Taylor • Fort Ethan Allen • Fort Marcy •
Battery Kemble • Battery Vermont • Battery Alexander • Fort Sumner • Fort Mansfield • Fort Gaines • Fort Simmons • Fort Bayard • Fort Reno • Fort Kearny • Fort DeRussy • Fort Stevens •
Fort Slocum • Fort Totten • Fort Slemmer • Fort Bunker Hill • Fort Saratoga • Fort Thayer • Fort Lincoln • Fort Mahan •
Fort Chaplin • Fort Meigs • Fort Dupont • Fort Saratoga • Fort Davis • Fort Baker • Fort Wagner • Fort Ricketts • Fort Stanton • Fort Snyder • Fort Carroll • Fort Greble •