The squad wedge (fig. 4-1 8) and squad vee (fig. 4-16) formations provide good security to both the front and the flanks. These formations are relatively easy to maneuver and control and can be quickly adapted to meet new tactical situations. The nature of the terrain generally determines which of the two formations should be used, the amount of frontage to cover, and the proximity and actions of the enemy.

Squad Echelon Right or Left

In squad echelon right or left, the fire teams are placed diagonally, one behind the other (fig. 4-19). This formation is used to protect an exposed flank, particularly when the enemy is known to be on that flank. From this formation, maximum firepower can be

Figure 4-21.-Change squad formations.

promptly delivered to the right or left flank or toward the right or left front.

Squad Line

The squad line, as the name implies, places all three fire teams abreast of one another on a line (fig. 4-20). This permits maximum firepower to the front in the shortest time, so the squad line is used extensively during an assault on a known enemy position. The squad line is suitable for rapidly crossing an unavoidable open area covered by enemy machine guns or artillery.