regiments into Marine Littoral Regiments (MRL), which are similar in size to a Marine Expeditionary Unit. A Marine Littoral Regiment is a self-deployable force, designed to be naval in nature and operate in the littoral region. A Marine Littoral Regiment consists of a littoral combat team, a littoral anti-air battalion, and a combat logistics battalion. Notably, the Marine Littoral Regiment has no aviation combat element, unlike a Marine Expeditionary Unit. Another Marine Corps element that does not function as part of the MAGTF are the Marine Raider Regiment, who function under United States Marine Forces Special Operations Command. Marine Raiders specialize in specialize in direct action, unconventional warfare, maritime interdiction, special reconnaissance, foreign internal defense, counterterrorism, and counterinsurgency missions. Marine Corps commands Under Headquarters Marine Corps, the Marine Corps is organized into the Fleet Marine Force, multiple commands, and Marine Corps service components to the unified combatant commands. U.S. Navy The United States Navy (USN) is the United States Armed Forces' maritime force. Originally established in 1775 as the Continental Navy, the U.S. Navy consists of the Regular Navy and the Navy Reserve. The Navy is the United States' dominant maritime service, responsible for maritime warfare operations. The U.S. Navy is organized under the Department of the Navy, which is a military department under the leadership of the secretary of the Navy and the under secretary of the Navy. The U.S. Navy itself is led by the chief of naval operations and the vice chief of naval operations, both admirals who are advised by the master chief petty officer of the Navy. The five enduring functions of the Navy are: Sea control Power projection Deterrence Maritime security Sealift Naval Surface Forces The Naval Surface Forces (NAVSURFOR) is the backbone of the U.S. Navy's combat power, conducting surface warfare operations and operating its fleet of combat surface ships. The Naval Surface Forces operates eleven nuclear powered aircraft carriers (CVN), split between the Nimitz-class and the newer Gerald R. Ford-class. Aircraft carriers are the centerpiece of the U.S. Navy's combat power, forming the nucleus of its eleven carrier strike groups (CSG). Each aircraft carrier has an embarked carrier air wing from the Naval Air Forces. The Naval Surface Forces also operate 116 surface combatants. These include the Ticonderoga-class guided-missile cruisers, Arleigh Burke-class guided-missile destroyers (DDG) and Zumwalt-class stealth guided-missile destroyers. Cruisers and destroyers ofthen operate as part of a larger formations, where