What does terrain-based fire control measures focus on?

Terrain-based fire control measures primarily focus on controlling fires on specific points, lines, or areas. This approach is crucial in ensuring that assets are used efficiently and effectively, aligning the employment of fire support with the characteristics of the terrain. By designating certain zones for fire, commanding officers can manage both the effectiveness of the strikes against hostile forces and minimize collateral damage.

This method allows military units to integrate their fire support plans with the landscape, enabling them to better exploit features such as elevation, cover, and concealment to enhance their combat effectiveness. Terrain-based measures ensure that all elements of a unit coordinate their fires to maximize lethality while maintaining control over the battlefield dynamics.

In this context, the other options do not align as closely with the principles of terrain-based fire control measures. Directing fire at the enemy's command structure, for instance, may be a goal of fire operations, but it does not inherently focus on the spatial dimension characteristic of terrain consideration. Targeting supply lines could be part of operational objectives but does not reflect the core intent of terrain-based control. Lastly, while restricting fire to relevant targets is important for efficiency and safety, it is a broader principle not exclusively tied to the terrain-focused method.