Flags have been repeatedly used as rallying issues during battles; infantrymen may assemble around their colorings for morale

https://shaneheqp027.slatecurrent.com/posts/celebrating-heritage-the-importance-of-civil-war-flags-in-today-s-society

Flags had been in some cases used as rallying features at some point of battles; infantrymen could accumulate round their hues for morale improve while faced with overwhelming odds.