What method of control would an observer use to specify the exact time rounds impact on the target?

The method of control that an observer would use to specify the exact time rounds impact on the target is known as "Time on Target." This method allows for precise coordination of multiple rounds of indirect fire so that they all impact simultaneously on the target at a predetermined moment. This synchronization is critical for maximizing the effectiveness of the fire support and reducing the risk of enemy forces maneuvering or reacting before the rounds arrive.

In this control method, the observer relays the specific time that rounds are scheduled to hit the target, contributing to tactical surprise and overwhelming the enemy’s defenses. It is particularly beneficial in situations where achieving a significant impact at a specific moment is vital, such as during a coordinated assault or when aiming to destroy an enemy asset that might be moved or reinforced.

The other options do not accurately describe a control method designed to achieve simultaneous impact at a specified time. "Time to Target" usually refers to the duration it takes for a round to reach the target after it has been fired, and while it is a relevant consideration in fire support planning, it does not dictate the timing of impact. "Request Time" is not a standard term associated with fire control methods, and "Duration" does not provide the specificity necessary for coordinating artillery strikes in the