battle group

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A US army unit usually composed of five companies.
• noun A naval force composed of a variable number of warships, escorts, and supply vessels, depending on the nature of the mission.
• noun An improvised force, usually of battalion or brigade strength, drawn from different units for a particular operation.
• noun Chiefly British A tactical force of battalion strength formed by attaching infantry and armored companies.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun an army unit usually consisting of five companies