Within military terminology, particularly when referencing modern Russian ground forces doctrine, the acronym BTG stands for a Battalion Tactical Group. A BTG is a highly mobile, combined-arms maneuver unit that is kept at a constant state of operational readiness. It typically combines a core motorized infantry or tank battalion with integrated artillery, air-defense, engineering, and logistical support units drawn from a parent brigade. This task-organized structure allows military commanders to project tactical combat power rapidly without needing to mobilize an entire division or full brigade structure.