Each country inside the Union had its very own unusual regimental flags in the course of the Civil War

https://remingtonfseq702.stonefielddigest.com/posts/reenacting-the-past-the-significance-of-using-authentic-civil-war-flags

Each kingdom within the Union had its personal one-of-a-kind regimental flags during the Civil War, reflecting nearby pleasure and individual histories tied to their participation within the struggle.