What shape does the NATO marker for chemical contamination have?

The NATO marker for chemical contamination is represented by a yellow upside-down triangle with red letters. This specific shape and color scheme is designed to ensure high visibility and easy recognition in various environments, especially under stressful conditions. The yellow color draws attention, which is critical when a soldier or unit is alerted to potential chemical threats. The upside-down triangle is a universally recognized symbol that signifies danger, further emphasizing the need for caution. The red letters are used for clear communication of the hazard, enhancing the marker's effectiveness in conveying important safety information quickly. This structured symbolism is crucial for maintaining situational awareness and can help in preventing exposure to chemical agents on the battlefield.