What identifies the required battle effects during training at a range?

The correct choice focuses on the importance of target types used during training to identify the required battle effects. Different types of targets simulate various scenarios and conditions that soldiers may encounter in actual combat situations. By using a range of target types—such as stationary, moving, pop-up, or reactive targets—trainers can assess how effectively soldiers can engage and respond to varying threats. This helps to replicate real battle conditions, allowing for a more accurate evaluation of a soldier's skills and effectiveness in combat scenarios.

While other options play significant roles in training, they do not directly influence the identification of necessary battle effects. An After Action Review (AAR), for instance, evaluates performance post-training rather than setting the requirements for what needs to be addressed during the exercise. Training event objectives give direction but do not specifically determine the tactical effects required. Engagement distances pertain to specific measurement parameters for firing weapons rather than the broader tactical implications of those engagements. Thus, the correct answer highlights an essential factor that shapes training outcomes and prepares soldiers for the complexity of battle.