| Fort Slocum | |
| Map Type: | United States District of Columbia street |
| Partof: | the Civil War defenses of Washington, D.C. |
| Location: | Manor Park, Washington, D.C. |
| Type: | Earthwork fort |
| Built: | 1861 |
| Builder: | 2nd Rhode Island Infantry |
| Materials: | Earth and timber |
| Used: | 1861–1865 |
| Demolished: | 1865 |
| Condition: | Residential Area |
| Controlledby: | Union Army |
| Battles: | American Civil War |
Fort Slocum was one of seven temporary earthwork forts, part of the Civil War Defenses of Washington, D.C., during the Civil War, built in the Northeast quadrant of the city after the beginning of the war by the Union Army to protect the city from the Confederate Army. From west to east, the forts were as follow: Fort Slocum, Fort Totten, Fort Slemmer, Fort Bunker Hill, Fort Saratoga, Fort Thayer and Fort Lincoln.
The fort was built by the 2nd Rhode Island Infantry. It was named after Colonel John Slocum of the 2nd Rhode Island Infantry, killed in action on July 21, 1861, at the First Battle of Bull Run (also known as the First Battle of Manassas).[1] The fort perimeter measured and covered the Rock Creek Church Road (today Blair Road) and New Hampshire Avenue.[2]
The fort contained the following equipment:
The batteries were never completed on the east and west of the fort. If they had, an extra ten more guns could have been added.[2]
The following elements garrisoned at the fort at some point during the war:
It provided support to Fort Stevens west of Fort Slocum. When the Confederate States Army attacked Fort Stevens on July 11 and July 12, 1864, Fort Slocum fired its long-range guns. During the battle, 1,500 employees of the Army Quartermaster office led by General Montgomery Meigs assisted the garrison along with 2,800 hospitalized soldiers from the nearby hospitals under the command of Colonel Francis Price.[2]
Today, no visible evidence remains of Fort Slocum. During World War II, the fort and its surroundings were demolished when victory gardens were planted to support the war effort.[2] Presently the park is administered as part of Rock Creek Park, and has forested trails and picnic areas.