Formation
Military formation means platoon, company, battery, battalion, division, squadron, regiment, brigade, base or another structure of the Armed Forces which is autonomous in organizational and economic terms [Law Insider].
Military formation - a formation of troops [Vocabulary.com].
an ordered arrangement of troops and vehicles for a specific
an ordered arrangement of two or more ships, units, or aircraft proceeding together under a commander [U. S. Department of Defense, p. 392].
A tactical formation (or order) is the arrangement or deployment of moving military forces such as infantry, cavalry, AFVs, military aircraft, or naval vessels. Formations were found in tribal societies such as the pua rere of the Māori, and ancient or medieval formations, which include shield walls (skjaldborg in Old Norse), phalanxes (lines of battle in close order), testudo formation and skirmishers [Wikiwand].
Military formation definition. Law insider. Retrieved from: https://www.lawinsider.com/dictionary/military-formation
U. S. Department of Defense. (2015). Dictionary of Military Terms. New York: Skyhorse
Military formation. Vocabulary.com. Retrieved from: https://www.vocabulary.com/dictionary/military%20formation