squadron

noun

1. 1.Primarily, a square; hence, a square body of troops; a body of troops drawn up in a square.
2. 2.A body of cavalry comprising two companies or troops, averaging from one hundred and twenty to two hundred soldiers.
3. 3.A body of infantrymen made up of several platoons, averaging from eighty to one hundred and fifty men, and led by a captain or a major.
4. 4.A detachment of vessels employed on any particular service or station, under the command of the senior officer
5. 5.(air force) A tactical air force unit; consists of at least two flights; multiple squadrons make up a group or wing (depending on particular air force).