What type of mission is normally fired on planned targets, with an associated duration?

The type of mission that is normally fired on planned targets with an associated duration is suppression. Suppression missions are designed to reduce or neutralize enemy forces or capabilities within a specified timeframe. This involves delivering artillery fire on predetermined targets to achieve a specific operational effect, such as keeping enemy forces at bay or disrupting their activities for a period of time. The key to suppression is its focus on timing and planning, ensuring that troops can maneuver or conduct operations without facing immediate threats from the enemy during the mission.

In contrast, adjust fire typically refers to missions where the observer calls for fire on targets that are not previously planned, requiring adjustments to ensure accuracy. Fire for effect (FFE) is used when the observer has confirmed that the initial rounds are accurate and requests a larger volume of fire. Immediate suppression or immediate smoke missions are urgent and do not have the same duration aspect; they aim to respond quickly to an immediate threat rather than operate under a predetermined time frame.