Very simple implementation - just add the upgrade notifications and buttons to garrison troops
This way player doesn't have to constantly shuffle troops in and out to see what can be upgraded
A more advanced approach would be to direct garrison troops auto-upgrading with some garrison management buttons/options in the "parties/garrisons" section
This way player doesn't have to constantly shuffle troops in and out to see what can be upgraded
A more advanced approach would be to direct garrison troops auto-upgrading with some garrison management buttons/options in the "parties/garrisons" section