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1 definition by USMCPoolee94

The amphibious warfare branch of the United States military, formed on Nov. 10th, 1775. Tun Tavern in Pennsylvania is considered the birthplace of this branch. The US Marines are in particular used as an invasion force, rather than an army of occupation, and is the only US military branch that is deployed during peacetime.
The US Marines were the first force to deploy into both Iraq and Afghanistan.
by USMCPoolee94 October 04, 2011