According to the Fundamentals of Reconnaissance, what should never be done with reconnaissance assets?

Keeping reconnaissance assets in reserve is considered inappropriate because these assets are specifically designed to gather crucial information and intelligence on enemy positions, movements, and terrain. Their primary function is to support decision-making in real-time operations. By holding them in reserve, the opportunity to proactively gather essential data is wasted, thereby diminishing their effectiveness and purpose in providing timely reconnaissance.

In contrast, using reconnaissance assets sparingly may have its merits in terms of resource management but does not reflect the need for timely intelligence. Concealing these assets is often necessary to maintain operational security, but it does not align with their intended role of information gathering. Lastly, while using reconnaissance units for training can be beneficial, it should not detract from their primary mission. Therefore, the correct approach is to actively employ reconnaissance assets in operations rather than reserving them, ensuring that the best information is available to command decision-makers when they need it most.