I can’t seem to beat the dragons in your save without losing any snipers. Can you describe the battle turn by turn?
The setup is as shown in the screenshot. The first unit attacks the air units, and the second unit attacks the skeletons. The first shot is aimed at the second unit, which attacks the skeletons, so that they take less damage. All units take a defensive stance. The second shot from the snipers is aimed at the dragon that will move first, so that it also becomes a level 1 unit. Then, we eliminate everyone without discrimination, maintaining a defensive formation. To win the battle without losing any snipers, it’s enough to get lucky with one shot on one of the dragon units, so that it is defeated immediately, which will save a turn. Although, it can be done without that as well.