All Officer Candidates and NROTC Midshipmen will attend OCS at the Brown Field area onboard Headquarters Marine Corps,
This is part of Marine Corps Base Quantico, VA.
Every male recruit east of the Mississippi River and every female recruit will attend MCRD Parris Island for boot camp.
The Marine Corps has trained recruits at Parris Island, a small coastal island approximately two miles from the Georgia-South Carolina border, since 1915. It is hot, humid, and swampy. Recruits will not leave the island until they graduate as Marines.
The biggest challenges recruits face on Parris Island are the humidity, heat, and the sand fleas. Sand fleas are small gnats that live in the marsh grass that crawl on and bite at recruits. Recruits in formation are not allowed to move and unable to swat at the annoying sand fleas while being bitten. Undisciplined recruits always make the mistake of moving - a terrible idea that incurs the wrath of their drill instructors.