Which ground-to-air symbol denotes a requirement for medical supplies?

The symbol that denotes a requirement for medical supplies is represented by "II." This symbol is used specifically to indicate the need for medical assistance or supplies when communicating between ground and air units, especially in emergency and tactical situations. It serves as a clear and concise way for ground personnel to articulate their needs to aerial support or units, ensuring that responders are informed about necessary medical resources.

The other symbols do not convey this specific requirement. For instance, "I" typically signifies other types of information and requests that are unrelated to medical supplies. "F" is often associated with fuel requests, while "X" might indicate a general or miscellaneous request that does not specifically address medical supply needs. Understanding these symbols is crucial for effective communication and coordination in various operational contexts, particularly in scenarios that require rapid response to medical emergencies.