Redoubt #2, approximately seventy yards northeast on private property, is the well preserved remains of the last surviving and largest of three redoubts built by the Union Army of the Potomac in February and March of 1863 to defend Aquia Landing from land attack. Aquia Landing was a critical source of supplies for the Army of the Potomac during parts of 1862, 1863, and 1864. This redoubt guarded the old Stafford Court House Road and could support 200 soldiers and two internally mounted 3-inch rifled cannons.