In a terrain model, friendly units are represented by which color?

In a terrain model, friendly units are commonly represented by the color blue. This color coding is standard in military operations to facilitate clear communication and understanding during planning and assessment of the battlefield. Blue is universally accepted as the designation for friendly forces, ensuring that all personnel can quickly recognize which units are allies and avoid confusion during operations. This color choice enhances situational awareness, which is critical for effective decision-making and coordination among units.