Which is a principle of concealment?

Observing from a prone position is crucial in the context of concealment because it significantly reduces the chance of being seen by an enemy. When personnel are in a prone position, they present a smaller target profile, making it harder for adversaries to detect them. This position also allows for better cover provided by the terrain or surrounding environment, aiding in concealment efforts.

Additionally, observing from the ground allows for more stable and accurate observations while minimizing movement, thereby enhancing secrecy. In combat or reconnaissance scenarios, being undetected is vital for safety and operational success, which is why this principle is so important.

On the other hand, staying on the skyline, looking over the top of objects, and remaining in motion while observing all tend to increase visibility and the likelihood of detection, which directly contradicts the primary goal of maintaining concealment.