What do blue lines represent on a military map?

Blue lines on a military map represent water features. This includes rivers, streams, lakes, and other bodies of water. Understanding this symbol is crucial for navigation and planning, as water features can impact travel routes, resource availability, and other tactical considerations. Recognizing these features allows soldiers to make informed decisions about movement, positioning, and engagement, as water can serve both as a natural barrier and as a vital resource. Each color on a military map has specific meanings, and blue consistently denotes water, which is essential for effective land navigation.