What color is used for contour lines and elevation markers on military maps?

The chosen answer is brown, which is the standard color used for contour lines and elevation markers on military maps. This color is utilized because it is easily distinguishable against the other colors found on the map, allowing for clear visibility of terrain features. Brown contours represent the elevation change in the landscape, which is crucial for navigation, planning, and tactical operations. Understanding elevation is vital for assessing how terrain might affect movement and visibility, making it essential for military strategies.

Other colors on military maps serve different purposes: blue typically indicates water bodies, red is often used for man-made features or boundary lines, and black might represent roads or buildings. Each color has its role, but brown distinctly conveys elevation and terrain contours, which is why it is the correct choice for this question.