Battle Group Definition

noun
A US army unit usually composed of five companies.
American Heritage
A military or naval task force, esp. aircraft carriers with their aircraft and support vessels.
Webster's New World
A naval force composed of a variable number of warships, escorts, and supply vessels, depending on the nature of the mission.
American Heritage
An improvised force, usually of battalion or brigade strength, drawn from different units for a particular operation.
American Heritage
A tactical force of battalion strength formed by attaching infantry and armored companies.
American Heritage