Flags have been oftentimes used as rallying factors for the time of battles; troopers could accumulate round their colorations for morale

https://jaredxnsc037.focalledger.com/posts/the-significance-of-colors-in-civil-war-flags-2

Flags had been in many instances used as rallying issues during battles; soldiers would acquire around their shades for morale enhance while faced with overwhelming odds.