11/29/2025
The U.S. Marine Corps is a branch of the U.S. military, founded in 1775, that serves as an expeditionary and amphibious force. It operates as a maritime land force under the Department of the Navy and is known for its ability to project power from sea to shore, respond to threats, and conduct operations in diverse environments. Its mission includes amphibious and expeditionary warfare, securing embassies, and providing security for naval bases. The core values are honor, courage, and commitment, with the motto "Semper fidelis" (Always faithful).
Key facts
Founding: November 10, 1775, by the Second Continental Congress.
Mission: To provide forces and detachments to naval ships and ground operations, develop expeditionary doctrine, and lead multinational military operations. They are America's first line of defense, trained to improvise, adapt, and overcome any obstacle.
Role: America's naval expeditionary force, trained to respond to threats, secure beaches, and project power from the sea.
Core Values: Honor, courage, and commitment.
Motto: "Semper fidelis," which means "Always faithful".
Structure: Falls under the Department of the Navy, but has a command structure similar to the Army. It includes operating forces, headquarters, a supporting establishment, and the Marine Corps Reserve.
Headquarters: The Pentagon in Arlington, Virginia.
Emblem: The official emblem is the Eagle, Globe, and Anchor.
History: Has participated in numerous conflicts, from the American Revolutionary War to more recent engagements in Afghanistan and Iraq.
What Marines do
Respond to global threats and provide security for naval bases and embassies.
Conduct amphibious and expeditionary warfare, including securing beaches and critical terrain.
Engage in humanitarian efforts and disaster relief.
Provide security and combat power from ship to shore as a unified combined arms team, incorporating ground, aviation, and amphibious assets.
