In military map reading, what type of terrain feature is indicated by the color brown?

In military map reading, the color brown is used to represent elevation and relief features. This includes hills, ridges, valleys, and other variations in elevation. Brown is specifically chosen to highlight these features, aiding in the understanding of the terrain. Such features are essential for various tactical considerations like troop movements, positioning, and planning maneuvers, as they can significantly influence line of sight and movement capabilities on the battlefield. Recognizing and interpreting brown on a map enables military personnel to better assess the geographical challenges and advantages present in their operational environment.