The Basic School (TBS) is where all newly commissioned and appointed United States Marine Corps officers are taught the basics of being an "Officer of Marines." The Basic School is located in Stafford County, Virginia to the south-west of the Marine Corps Base Quantico complex. Each year, over 1,700 new officers are trained, representing such commissioning sources as the U.S. Naval Academy, Navy ROTC, Officer Candidates School, and newly appointed Marine Corps Warrant Officers, U.S. Merchant Marine Academy accession programs.