Which battle drill requires a reaction to indirect fire?

Battle Drill 9 is specifically designed for a situation involving indirect fire, which includes actions taken when the unit is being shelled or targeted by artillery or mortars. This drill emphasizes the importance of immediate and practiced responses to protect personnel and minimize casualties. It covers the actions to take when indirect fire occurs, such as seeking cover, accounting for personnel, and executing rapid movement to safer locations.

Understanding the nuances of Battle Drill 9 is crucial for soldiers, as effective execution of the drill can save lives during combat situations. It prepares units to react instinctively and shield themselves from the chaos and danger of indirect fire, underlining the importance of preparedness and training in such high-stress scenarios.