In which symbol will your unit be depicted on a map in an area?

The correct answer is depicted as a hollow circle with "AA" in the middle, which signifies specific types of units, particularly in the context of military maps. This symbol indicates an antiaircraft artillery unit. Military symbology is essential for effective communication and coordination on the battlefield, as these symbols convey vital information about the types of units present in a particular area.

In contrast, the other options represent different units or functions. A solid square typically denotes a brigade or a headquarters element, while a framed triangle is used for representing a division. The diamond with a cross symbolizes medical units or facilities. Understanding these symbols is crucial for operational planning and situational awareness in the field.