What task involves trading space for time by slowing down the enemy's momentum?

The task that involves trading space for time by slowing down the enemy's momentum is identified as delay. Delaying operations are crucial in military strategy, particularly when a force needs to buy time to regroup, reinforce, or prepare for a more favorable engagement. This task is executed by slowing down the advance of the enemy, allowing friendly forces to reposition or achieve advantageous conditions.

Delaying can involve various tactics such as setting up strongpoints, employing indirect fires, or utilizing obstacles to impede enemy movement. This approach not only hinders the enemy's progress but can also create opportunities for counteractions at a later time, making it a strategic maneuver in military operations.