Flags were many times used as rallying features for the period of battles; troopers could gather round their shades for morale

https://johnnyirgi379.cavandoragh.org/the-evolution-of-civil-war-flags-designs-and-meanings

Flags were on occasion used as rallying aspects for the time of battles; infantrymen would bring together round their colorings for morale give a boost to when confronted with overwhelming odds.