Which of the following is NOT a form of maneuver in operations?

The reasoning behind identifying withdrawal as not being a form of maneuver in operations lies in the definitions and intentions behind different tactical movements. Envelopment, flank attack, and pursuit all represent proactive and offensive strategies aimed at engaging and defeating an enemy.

Envelopment involves maneuvering around the enemy's flanks to attack from the rear or side, seeking to create a tactical advantage. Similarly, a flank attack directly attacks an enemy's side, which again aims to exploit vulnerabilities and create opportunities for victory. Pursuit, on the other hand, is a form of offensive action that aims to chase down a retreating enemy to prevent them from regrouping and to exploit their disorganization.

In contrast, withdrawal is a defensive action taken to disengage from combat, often prompted by unfavorable conditions or to conserve forces for future engagements. It does not actively seek to engage the enemy but rather focuses on repositioning forces to a more advantageous location or situation. Therefore, while all the other options involve direct interactions with the enemy aimed at achieving tactical objectives, withdrawal is primarily aimed at avoiding conflict, which is why it is not considered a form of maneuver in offensive operations.