@rellhaiser I would say on a 10-12 All Calvary are forced to retreat during a battle, both attacker and defender, but no limit on purchases. They are not limited to 2. This gives them a little risk bringing them into battle.
The idea was that you could retreat one of your Cavalry / Armored Cars every turn you battled in that territory - this just gave you a way to have some units slip out from a losing battle. There’s nothing saying you couldn’t have a set of rules that allowed a player to retreat all of their Cavalry / Armored Cars any turn they liked - I just wrote a different set of rules. You do you.