In the context of Army drills, what does Battle Drill 9 require?

Battle Drill 9 is specifically focused on the reaction to indirect fire, which is a critical operational response for soldiers in the field. This drill trains soldiers to swiftly and effectively respond when they are under indirect fire, such as artillery or mortar attacks.

The focus on Battle Drill 9 underscores the importance of maintaining composure and executing immediate actions to ensure personal and team safety, along with effective counteractions against threats. Understanding and practicing this drill helps units to minimize casualties and maintain operational effectiveness during combat scenarios, where indirect fire can be unpredictable and dangerous.

The other options relate to different tasks and scenarios that soldiers must also be prepared for, but they do not fall under the specific requirements of Battle Drill 9. These drills are designed to cover a wide range of possible combat situations, ensuring that units are well-prepared for diverse threats on the battlefield.