MIL-STD-3009 is a military standard that specifies the requirements for the use of color in military displays. It aims to ensure that colors used in various military applications, such as maps and charts, are consistent and easily distinguishable under different lighting conditions. This standard helps improve communication and situational awareness for military personnel. The standard outlines specific color combinations and contrasts to enhance visibility and reduce errors. By adhering to MIL-STD-3009, military equipment and documentation can maintain a high level of clarity, which is crucial for effective operations in diverse environments.