The Confederate conflict flag, pretty much identified through its unique blue saltire in opposition to a red box

https://mariohczd240.nexorafield.com/posts/a-collector-s-dream-the-fascinating-world-of-civil-war-flags-3

The Confederate struggle flag, usally identified by means of its one of a kind blue saltire against a purple field, turned into a lasting symbol of Southern pleasure and background, no matter its debatable connotations.