In military operations, what is the primary function of a supporting effort?

The primary function of a supporting effort in military operations is to enhance the main effort. The supporting effort is designed to assist the main effort by providing additional resources, fire support, or diversionary actions that can help to achieve the overall mission objectives. This integration allows for a more effective application of combat power, as the supporting effort can create conditions that facilitate the success of the main force.

For instance, by engaging enemy forces or drawing their attention away from the main assault, the supporting effort can disrupt the enemy's defensive posture, making the objectives of the main effort easier to accomplish. This coordinated approach ensures that all units work together in a complementary manner, maximizing the effectiveness of the operation as a whole.

Other options describe roles that can occur in military operations, but they do not capture the essence of what a supporting effort is intended to accomplish. Serving as reserves, engaging in independent operations, or conducting reconnaissance do not align with the primary objective of a supporting effort, which is inherently linked to bolstering and amplifying the success of the main effort.