The following regiments constitute the Fourth Brigade of the South Carolina Militia: 1st Regiment of Artillery (Charleston), 1st Regiment of Rifles (Charleston), 16th Regiment of Infantry (Charleston), 17th Regiment of Infantry (Charleston), 18th Regiment of Infantry, and 19th Regiment of Infantry (Christ Church, St. Thomas and St. Denis, St. James Santee, St. Stephens, and St. John's Berkeley Parishes, South Carolina).
From the description of 4th Brigade order book, 1861-1862. (The South Carolina Historical Society). WorldCat record id: 32140976