Quote Originally Posted by katsalia View Post
Is there any general strategy tips for battles? I feel like I'm doing something wrong since even though I'm doing missions that are like 1-2 below my current level, 1 of my units ends up being killed.
This Reddit guide pretty much sums it up. You either go straight for the commander or build up a deathball and keep it alive while it goes across the map.

Which units are dying? If it's not a heavy or medium then it sounds like you need to position them better.