Which TC is used for map reading and land navigation?

The correct choice, TC 3-25.26, serves as the primary training circular that focuses specifically on map reading and land navigation. This TC provides comprehensive guidance on understanding topographic maps, using a compass, and navigating through various terrains. It covers essential skills and techniques, enabling soldiers to effectively interpret map symbols, determine grid coordinates, and apply navigation skills in both land and operational settings.

This training circular is vital for ensuring that soldiers are proficient in navigation skills, which are crucial for successful missions and operations in the field. The emphasis on both theoretical knowledge and practical applications makes TC 3-25.26 the definitive resource for these fundamental skills.

The other options pertain to different subjects within military training, such as weapon systems and tactics, rather than focusing specifically on the components of map reading and land navigation.