(4) Formations. (Figure 3-3). (a) Linear Ambush. In an ambush using a linear formation, the assault and support elements deploy parallel to the enemy’s route. This positions both elements on the long axis of the kill zone and subjects the enemy to flanking fire. This formation can be used in close terrain that restricts the enemy’s ability to maneuver against the platoon, or in open terrain provided a means of keeping the enemy in the kill zone can be effected.