Many regiments for the period of the Civil War carried exotic flags that showcased their extraordinary unit insignia
https://remingtonfseq702.stonefielddigest.com/posts/a-closer-look-at-the-most-iconic-civil-war-flags-of-the-era
Many regiments at some stage in the Civil War carried exclusive flags that showcased their selected unit insignia, fostering camaraderie and pride amongst squaddies on the battlefield.