Expeditionary Strike Group
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An Expeditionary Strike Group (ESG) is a U.S. Navy unit that adds surface combatant warships and submarines to the amphibious warfare and limited air operations capabilities of an Amphibious Ready Group. The additional ships of an ESG are effectively the escort of a Carrier Strike Group. Without an ARG and possibly without the submarine, they may be called a surface action group. Typically, it will be commanded by a rear admiral senior to the commodore of the ARG.
The combat vessels of an ESG include:
- Ticonderoga-class cruiser(s)
- Burke-class destroyer(s)
- Oliver Hazard Perry-class frigates
- Los Angeles-class submarine(s)
They may be accompanied by a replenishment ship.