United States Marine Corps

United States Marine Corps

n.

a branch of the United States armed forces trained for land, sea, and aerial combat, responsible especially for amphibious operations: a separate service within the Department of the Navy

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(also the United States Marines)

a US armed service that is part of the US Navy. It was established by Congress in 1798 as the only service trained to fight on the sea, on land and in the air. The Marines became well known during World War II when they successfully attacked the Pacific islands occupied by the Japanese. They were also active in the Korean War, the Vietnam War, the Gulf War and the war in Iraq.

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