Sort of. It depends where your save point is. If you’re on the world screen and save before selecting a mission your mission can generate differently when it loads. If you save in mission making the same moves will always give the same results, but changing your moves slightly will cause some different background math and change the chances on a shot hitting, etc. All the enemy groups are generated already if you save in level, so if you get ambushed in some horrific way you can avoid them on reload. I would typically save just before selecting a mission, another at mission start once I’m deployed, and then once more on mission completion. I would rarely use it and eat most of my mistakes, but on a few occasions I would have one of my units get totally fucked by a group somehow hidden one space away around a corner or something like that and then the scum power comes out to save my ass.