Flags were at times used as rallying elements at some point of battles; squaddies would accumulate round their colorings for morale

https://cruzbuxy751.solsticebrief.com/posts/civil-war-flag-battles-famous-engagements-and-their-banners-3

Flags have been often used as rallying points throughout the time of battles; infantrymen may accumulate around their colorings for morale enhance when confronted with overwhelming odds.