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

https://simonadmb548.valiantfield.com/posts/reenactment-quality-civil-war-flags-how-to-choose-the-best-for-your-event

Many regiments for the time of the Civil War carried unusual flags that showcased their exclusive unit insignia, fostering camaraderie and pleasure amongst soldiers at the battlefield.