Infantry Drills

3-6: Mass and Concentration

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3-6. Defenders seek to mass the effects of overwhelming combat power where they choose and shift it to support the decisive operation. To obtain an advantage at decisive points, defenders economize and accept risk in some areas; retain and, when necessary, reconstitute a reserve; and maneuver to gain local superiority at the point of decision. Unit leaders accept risk in some areas to mass effects elsewhere. Obstacles, security forces, and fires can assist in reducing risk.

Next: 3-7: Flexibility

Go Back To: U.S. Army FM 3-21.8: The Infantry Rifle Platoon and Squad