Can I change the order of two of the game's phases: Buy units and Combat move? What will it change? What are the benefits?
Regarding the order of play, the game is designed so that you buy your units guessing on what you will need next turn, after the results of all the combats from now until then, including the results of your turn
What if the order of buy units and combat move are exchanged?
So the players would first make the combat moves, then buy their units.
After introducing the game to a few new players, actually just finishing a game right now :), I wanted to share this small detail. It makes life a bit simpler. In tripleA (computer game similar to this) one of the maps actually implements this modified rule.