The tradition of flying flags dates again centuries, serving as a means of verbal exchange on battlefields

https://charliezxdk612.opalvector.com/posts/from-history-to-homefront-flying-the-flag-for-heritage-and-honor

The tradition of flying flags dates again centuries, serving as a way of conversation on battlefields. They conveyed messages of allegiance and victory, enabling armies to coordinate hobbies and tactics with no verbal conversation.