A body of troops; esp. a body of troops or an army in battle array.
A regiment, or two or more companies of a regiment, esp. when assembled for drill or battle.
To form into battalions.
An infantry command of two or more companies, which is the tactical unit of the infantry, or the smallest command which is self-supporting upon the battlefield, and also the unit in which the strength of the infantry of an army is expressed.
A pencil and rubber are of more use to thought than a battalion of assistants. To happiness the same applies as to truth: one does not have it, but is in it. Theodor Adorno
In the World War nothing was more dreadful to witness than a chain of men starting with a battalion commander and ending with an army commander sitting in telephone boxes, improvised or actual, talking, talking, talking, in place of leading, leading, leading. J. F. C. Fuller
The Germans have done wonderful work. Not long ago, a German battle group battalion conducted a very impressive counterinsurgency operation in a portion of Baghlan province. I think these are the first counterinsurgency operations conducted by any German element after World War II. And they did a very impressive job. David Petraeus
The day after the prison was transferred to the military intelligence command, they had an entire battalion - 1,200, 1,500 soldiers - arrive at Abu Ghraib just for force protection alone. Janis Karpinski