Flags had been normally used as rallying factors throughout the time of battles; troopers may assemble round their colorings for morale

https://daltonhmgr084.terracolumn.com/posts/from-cotton-to-canvas-the-materials-behind-civil-war-flags-2

Flags have been often used as rallying aspects all over battles; troopers could accumulate round their colorings for morale aid whilst confronted with overwhelming odds.