Battle groups are military units composed of a variety of personnel and equipment. They are typically used for offensive or defensive operations. The term 'battle group' is often used interchangeably with 'ARMY, ' 'ARMADA, ' and 'ELITE.' An ARMY is a large, organized force of soldiers, usually consisting of infantry, artillery, and other combat units. An ARMADA is a large fleet of warships, typically used for naval warfare. Elites are highly trained and experienced military personnel, often used in special operations.