Mobile defense is recommended for use when the terrain is favorable for deep maneuvers, the defending troops are not inferior to the enemy in mobility, there is at least partial
air superiority, and the range of tasks assigned to the defenders allows temporary abandonment of some occupied territories. In addition, it is used when defending large water barriers, the sea coast, the hasty transition to defensive actions or when occupying the defense on a broad front. When organizing mobile defense, a significant portion (up to two-thirds) of the available forces and means are assigned to the second echelon (reserve), which is withdrawn deep into their ranks. As a rule, the second echelon includes armored formations. The remaining forces (about one-third), the basis of which are motorized infantry units, are moved into the first echelon. Blocking positions are prepared, engineering barriers are set up, and resistance centers are equipped in the areas where the attackers are supposed to be lured. They are usually engaged by first-echelon units with the task of firmly holding and suppressing any attempts by the enemy to advance in depth and to the flanks. As the enemy approaches their positions, the primary goal of first-echelon units is to offer maximum resistance and force the enemy to introduce additional forces and means to further advance. This forces the enemy to concentrate a dense grouping of forces in the area of the incursion, which becomes a profitable target for the use of
weapons of mass destruction. The classic scenario for defeating an advancing group includes first massive strikes on it using artillery, aviation and nuclear weapons, and then a counterstrike by fresh second-echelon units supported by all available firepower. Usually a division is considered the minimum unit capable of mounting a mobile defense, since it can provide forces and assets to simultaneously provide blocking,
covering, and
counterattacks. Nevertheless, in some cases it is possible to conduct mobile defense operations by a brigade or even a separate armored cavalry regiment. == See also ==