Many regiments at some stage in the Civil War carried interesting flags that showcased their definite unit insignia

https://troynvgr831.moderncairn.com/posts/from-battlefields-to-museums-the-journey-of-historic-civil-war-flags

Many regiments for the duration of the Civil War carried amazing flags that showcased their precise unit insignia, fostering camaraderie and satisfaction amongst troopers at the battlefield.