From the Lewes Chamber of Commerce:
1812 Memorial Park was a defense battery during the War of 1812 and the site is marked by a granite monument placed by the National Society, U.S. Daughters of 1812. Four large guns on the upper lumps were contributed by the government. Between them is a small gun believed taken from a pirate vessel abandoned in the creek. A three- inch naval gun on the lower terrace, used during World War 1, was placed by the American Legion in 1930.