Honestly I think this would be a cool mission.
You start off as a nazi soilder in a battle, people get outraged by this of course but you start by following orders. Then a cutscenes appears where you are talking to your buddy about how fucked up the whole situation is. Then u get sent to a consentration camp for the first time. Call of duty shows emotion for once and the nazi soilder shades some tears and rants about how fucked up this is with his buddy and how they should do something.
Well you decide at night that you need to gather as much Jews as you can and let them out. So then u have a stealth level in the vain of hacksaw ridge where you keep setting Jews free then going back to capture more. But when u finally get caught u are killed by no other then the guy from inglorious basterds who I'm blanking a name on
I think this would be a cool mission and would show that some nazis were just following orders and didn't want to do what they were doing. Then it would also establish how evil they were by them killing the soilder in a terrible way. I homage to shindlers list I would say