Squad Wedge
The squad wedge is created by having each Fireteam create an echelon left/right respectively, creating a wedge at the squad level. The squad lead element can then sit inside this wedge for maximum protection.
The squad wedge allows for full fire frontwards by quickly transitioning to a squad line, and also allows for squad level maneuvers if contacted from the sides, by automatically creating a front and rear element from which to use fire and maneuver tactics, such as bounding.