👉 A flagger is a person who is responsible for marking the location of a military base or camp, especially in the context of the United States Army. They are typically stationed at a specific location and are tasked with identifying any unauthorized visitors to the base or camp. Flaggers often wear identification badges or insignia that identify their role as a flagger. These badges may include a blue flag, which is the standard symbol used by the military, or other distinctive symbols depending on the specific unit or organization