I think this window is very uncomfortable when you play on hard difficulty. Let me explain:
You have to plan your battles very precisely when you play on hard difficulty, because if one of your strength-based damage dealers recive damage during first 10 turns you will have to restart battle or finish it with some of your units injured(this is unacceptable on hard difficulty). To create precise plan you need to know type of enemies, their amount, their turn queue and their travel distance. So in TBS and TBS2 you have to restart battle four times to gather all information what is very annoying. I hope you will fix it in TBS3.

P.S. I am sorry for my english.)