The 218th Infantry Regiment, now known simply as the 218th Regiment, is a regiment of the South Carolina Army National Guard. It serves as the RTI (Regional Training Institute) for the state's National Guard units. The 1st Battalion conducts 12N (Horizontal Construction Engineer) training. The 2nd Battalion conducts OCS (Officer Candidate School) training. The 3rd Battalion conducts ALC (Advanced Leader Course) and NCO (Non-commissioned officer) Academy training. The 4th Battalion is a "general studies" Battalion, and conducts training to support 31B (Military Police), 88M (Motor Transport Operator), Army Basic Instructor Course, and the Pre-Command Course. Lastly, the 5th Battalion conducts 25U (Signal Support Systems Specialist) and 25B (Information technology specialist) training.