Which of the following is NOT part of Simple Envelopment?

• A. Frontal Attack
• B. Depth Attack
• C. Flanking Maneuver
• D. Infiltration

Answer: (C)

Simple envelopment is a tactic that creates an encirclement by combining a main effort against the enemy’s front with secondary actions that threaten or strike from the sides and rear, forcing the opponent to react and fall into a trap without requiring a full, wide turning movement. The frontal attack serves as the fixed, primary pressure that holds the enemy in place. Infiltration and depth attack are the supporting moves that slip behind or into the enemy’s rear areas, disrupt their logistics and command, and undermine their cohesion, making it possible to close the encirclement.

A flank maneuver, while valuable in many situations to threaten the enemy’s side, is a distinct approach focused on the side of the line rather than closing around the enemy to envelop them. By itself, it does not constitute the enveloping pattern that defines simple envelopment, which is why it isn’t included as part of that tactic.