Board Thread:General Discussion/@comment-7146531-20140104130922/@comment-24280747-20140108035151

In Ace Combat Zero from theories I've heard, B7R is just the designated code given by commanders during the conflict. Basically the militaries broke down the countries into Strategic Airspaces, each given a name like B7R. B is for Belka, 7 is the distance east it is on the grid, and R is the distance it is south on the grid. The designations are given by Belka which is why the grid's axis are centred in Belka. This is just a theory anyways, and it doesn't really make an answer more apparent. I just wanted to share it as a possibility.