How about a lock button so that troops from the queue after the first army doesn't automatically go into the first army space?
This will serve two purpose:
1. You can queue donation troops in the 2nd army space and they don't automatically go into your first army space if you were to make an attack. (Or if you donate troops that are in your first army space the troops from 2nd army space doesn't automatically go in and fill the gap)
2. This will also make it easier to replenish troops for 2nd attack. You lock the queue just before you attack and after your attack you can see what troops are leftover. Then you look at your 2nd army queue and push those duplicate troops to the back of the line before you unlock the queue for the front of the 2nd army queue to flow into the first army space.




