
Battalion
Military Unit
 Understand 'battalion' as part of a military hierarchy; it’s smaller than a brigade but larger than a company. 
He was promoted and took command of the entire battalion.
 Combat Context
 'Battalion' implies readiness for combat and can denote a sense of urgency or importance in military operations. 
The battalion mobilized overnight to reinforce the front lines.
 Specialization
 'Battalion' can indicate a specialized group within an army, like engineers or signal corps. 
An engineering battalion was brought in to construct the bridge.