The Battle of Washington took place from March 30 to April 19, 1863, in Beaufort County, North Carolina, as part of Confederate Lt. Gen. James Longstreet's Tidewater operations during the American Civil War. This battle is sometimes referred to as the siege of Little Washington.

John Gray Foster was an American soldier. A career military officer in the United States Army and a Union general during the American Civil War, he served in North and South Carolina during the war. A reconstruction era expert in underwater demolition, he wrote a treatise on the subject in 1869. He continued with the Army after the war, using his expertise as assistant to the Chief Engineer in Washington, DC and at a post on Lake Erie.