<Tr> <Th_colspan="2"> Commanders </Th> </Tr> <Tr> <Th> Current commander </Th> <Td> Colonel Ahmed T. Williamson </Td> </Tr> <P> Located at Marine Corps Base Quantico, the United States Marine Corps Officer Candidates School (OCS) is a physically demanding, mentally challenging training regimen designed to screen and evaluate potential Marine Corps Officers . The course is designed to create a controlled, challenging environment wherein the officer candidates are pushed to their physical and mental limits in order to screen their decision - making abilities while physically exhausted . Those who successfully complete the period of instruction earn the title United States Marine and are commissioned as a Second Lieutenant . Unlike the other United States military services, the majority of Marine Corps officers complete OCS to earn a commission; the exceptions are midshipmen from the United States Naval Academy, limited duty officers, and inter-service transfers . Additionally, OCS boasts an attrition rate of 30--50% . </P> <P> Depending on the course, Officer Candidates go through either a 10 - week (PLC Combined / OCC), or two 6 - week courses (PLC) over separate summers, designed primarily to screen and evaluate candidates' fitness to lead Marines by placing them in leadership positions in a stressful environment . Students are evaluated during 2--3 day garrison command billets at the company and platoon level, and squad and fire - team level tactical billets during field exercises . </P>

Where do marine officers go to boot camp