text: Movement and Forms of Maneuver
  DIAMOND FORMATION
  2-13. A diamond formation is a movement formation with one element leading, one element positioned
  on each flank, and the remaining elements to the rear. The non-security units of the diamond usually
  move in a column formation inside of the diamond. It is most effective during approach marches,
  exploitations, or pursuits when the unit has only general knowledge about the enemy. Figure 2-7 depicts a
  diamond formation. Advantages of employing a diamond formation include—
  * Allowing units to maneuver to either flank immediately, regardless of which subordinate element
  makes enemy contact.
  * Facilitates making enemy contact with the smallest possible force yet provides all around security.
  * Provides firepower to the front and flanks.
  * Changes easily and quickly to another formation.
  * Facilitates speed of movement while remaining easy to control.
  * Provides an uncommitted force for use as a reserve.
  2-14. The primary disadvantages of this formation are that it—
  * Requires sufficient maneuver space or multiple routes for dispersion laterally and in depth.
  * Requires four subordinate maneuver elements.
  Figure 2-7. Diamond formation