Flags were every so often used as rallying points throughout the time of battles; troopers could gather round their shades for morale

https://wiki-zine.win/index.php/The_Ultimate_Guide_to_Buying_Historic_Civil_War_Flags_Online

Flags have been frequently used as rallying points all the way through battles; squaddies might accumulate around their hues for morale improve whilst faced with overwhelming odds.