Advance Wars is a "Battle Isle style game" and Battle Worlds is a spiritual followup to Battle Isle.
So you know what to do.
Or you could play Battle Isle 3.
That's a strange way of looking at it seeing as the Wars series came first (though not in the west admittedly).
And I think the Battle Isle devs themselves said they were influenced by Neo Nectaris, a game that was released in the west as Military Madness.