The United States Marine Corps is an amphibious force-in-readiness whose purpose is to project power from the sea to land. Their mission is the seizure or defense of advanced naval bases and other land operations to support naval campaigns, and above all else, to win battles. Aside from the support of naval operations, the Marine Corps also serves an expeditionary role in America's armed forces, being the proverbial "tip of the spear". United States Marines are of the most highly trained and highly motivated fighting forces in the entire world, and take pride in the motto "First to Fight".
All those enlisting into service as a United States Marine attend 13-week recruit training at Marine Corps Recruit Depot in San Diego, CA or Parris Island, SC. Marine Corps recruit training is the longest and most demanding out of all services in the Department of Defense. For those who wish to be officers, they must earn their commission at Officer Candidate School in Quantico, VA, or by attending the United States Military Academy in Annapolis, MD. The Marine Corps motto, Semper Fidelis, "always faithful". This exemplifies what it means to be a Marine. U.S. Marines are dedicated to their brethren, and to the nation they have taken an oath to protect.