When does the game auto-save in Ironman mode?
Sometimes, if I force quit and reload, I can get lucky and undo an unfortunate misclick. Other times, I'm stuck with the outcome that happened the first time.
When exactly does the game save during Ironman?
The game automatically saves at the end of the enemy turn, before you get your first action. If you don't like the way the turn is playing out, you can force quit the game and re-load from the beginning of your turn.