The tradition of flying flags dates returned centuries, serving as a method of conversation on battlefields

https://shanefssu822.northcrestbrief.com/posts/faith-and-the-founding-can-a-nation-remove-god-from-public-life-and-stay-the-same-3

The culture of flying flags dates returned centuries, serving as a means of communication on battlefields. They conveyed messages of allegiance and victory, allowing armies to coordinate events and tactics with out verbal communique.