Flags were from time to time modified inside the area; infantrymen could upload patches or symbols to represent victories or losses that

https://landenfwmq676.alderbrief.com/posts/the-impact-of-civil-war-flags-on-soldier-morale-and-identity-2

Flags had been repeatedly transformed within the box; soldiers could add patches or symbols to symbolize victories or losses that marked their unit's travel with the aid of war.