During which phase do forces directly engage the enemy to achieve decisive victory?

The correct answer is the assault phase. This phase is characterized by the direct engagement of enemy forces with the intent to achieve a decisive victory. During the assault phase, units execute offensive operations that may involve maneuvers, fire support, and close combat, all aimed at overcoming the enemy's defenses and seizing terrain or objectives.

This phase is crucial because it transforms overall operational plans into action, focusing on closing with the enemy to disrupt their operations, inflict casualties, and secure key objectives. Forces actively execute tactical maneuvers to penetrate and exploit weaknesses in the enemy's defenses, which is essential for achieving the overall strategic goals of the operation.

In contrast, other phases such as preparation involve planning and organizing forces, the withdrawal phase concentrates on disengagement and repositioning, and the restoration phase is focused on recuperating and rebuilding capabilities after engagements. These phases are important for overall operational success but do not directly involve the engagement of the enemy in a combat scenario as the assault phase does.