What does TACAN primarily provide for military navigation?

The correct choice encompasses all the functions performed by TACAN, which stands for Tactical Air Navigation. TACAN is a system used primarily in military aviation that provides vital navigational information to aircraft. It is designed to offer range and bearing information from a specific TACAN station, enabling precise navigation over distances.

TACAN utilizes Distance Measuring Equipment (DME) to relay the distance from the aircraft to the station, aiding pilots in determining how far they are from their target or waypoint. Additionally, it provides guidance in terms of bearing, allowing pilots to navigate accurately toward or away from the TACAN station.

By offering both distance and directional information, TACAN assists in effective route planning and navigation, enhancing the safety and efficiency of military flight operations. Therefore, since TACAN includes capabilities for radar guidance, DME, and navigation assistance, the comprehensive nature of its functionalities aligns with the provided answer.