A battalion is a unit of an army. One battalion usually consists of three of more companies and a headquarters.

The word battalion sounds a lot like battle, and that's a clue to its meaning: battalions are groups engaged in a battle. Specifically, a battalion is a smaller segment of an army. Within a battalion, there will usually be a headquarters, as well as a few smaller units, which are called companies. The members of a battalion will work closely together, whether they are attacking an enemy or defending a base. Veterans always remember the other soldiers in their battalion.

Definitions of battalion

n an army unit usually consisting of a headquarters and three or more companies

United States Army Rangers
a specially trained elite unit of the United States Army
Type of:
army unit
a military unit that is part of an army

n a large indefinite number

“a battalion of ants”
large number, multitude, pack, plurality
Type of:
large indefinite amount, large indefinite quantity
an indefinite quantity that is above the average in size or magnitude

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