The Battle of Drewry's Bluff, also known as the Battle of Fort Darling, or Fort Drewry, took place on May 15, 1862, in Chesterfield County, Virginia, as part of the Peninsula Campaign of the American Civil War. Four Union Navy warships, including the ironclads USS Monitor and Galena, and the United States Revenue Cutter Service's ironclad USRC Naugatuck steamed up the James River to test the defenses of Richmond, Virginia, the Confederate capital. They encountered submerged obstacles, and the batteries of Fort Darling at Drewry's Bluff inflicted severe damage on Galena, forcing the ships to turn back.