What's the Point of a Beacon?

A beacon is a long distance communication method meant to send one piece of information from one place to another. Lk, very simple binary message that either means war is off or war is on. And depending on who lit it, you or them, you know which direction to go. It raises the question, will this ancient ally now turn to cool? Will they rally? Cause this kind of parallels the relationship between the christian west and modern day turkey. They were both part of the greco roman world at one point. But then there's a falling out between the roman version of christianityThe byzantine version ofchristianity.Will the one rise to help