Echelon

An Echelon is a Formation for all types of units, wherein one unit is situated behind and off to one side of another unit. The terms "Echelon Right" and "Echelon Left" determine the direction of the lateral offset.

In an Echelon formation, the unit at the rear serves as protection on the corresponding flank, and can respond to attacks on that flank accordingly. If an enemy appears off to the side, both units are already arranged in a Line towards it and can attack it together immediately. If enemies are encountered to the front, the echeloned unit (the one behind and to the side) simply needs to move a little forward to create the Line, or it can flank around to attack the enemy from a second direction.

An Echelon formation is typically assumed while moving, when expecting enemies to appear from one particular side. It is most often assumed by Fireteams or Squads traveling together.

"Echelon" can be used as a noun or as a verb. The intended direction of the echelon must be included in the order to assume this formation, unless it has already been indicated previously.