ADP 3-90, page 98

Glossary Glossary-12 ADP 3-90 31 July 2019 *time of attack The moment the leading elements of the main body cross the line of departure, or in a limited-visibility attack, the point of departure. *troop A company-size unit in a cavalry organization. *troop movement The movement of Soldiers and units from one place to another by any available means. *uncommitted force A force that is not in contact with an enemy and is not already deployed on a specific mission or course of action. warfighting function A group of tasks and systems united by a common purpose that commanders use to accomplish missions and training objectives. (ADP 3-0) *withdraw To disengage from an enemy force and move in a direction away from the enemy. *zone reconnaissance A type of reconnaissance operation that involves a directed effort to obtain detailed information on all routes, obstacles, terrain, and enemy forces within a zone defined by boundaries.