"As far as I can tell, if we can signal the train early enough, and, again, have some people disguise themselves as enemy soldiers, we should be able to get the train to stop. It's not like it's going to be armoured or anything, and while I'm sure (based off of the warm reception we received here) that there'll be more than the normal amount of troops on this train, it shouldn't be anything too ridiculous, like robotic dogs that can only be killed in melee combat and have maces for tails, or dudes with lightning grenades or ricocheting shotgun bullets, or grenade launchers that shoot rockets, or..." *definitely not just mentioning Nazi gear from Wolfenstein: The New Order or anything*
"Of course, you make a good point about these guys being, after all, Nazis, and therefore perfectly willing to use human shields. Hopefully we can kill them before that becomes an issue. As for keeping an eye on the engineer that's running the damn thing, regardless of whether it's an armoured train or not, it's going to be hard to keep overwatch on the engine compartment at the front, since there'll be the entirety of the actual engine itself in between us and the compartment. I would suggest, if someone is going on overwatch, trying to get up in a tree or something, and be behind where the actual train itself is going to stop."
Since this is a concentration camp transport, historically, the prisoners will be in cattle cars (box cars, for all intents and purposes) packed elbow to elbow, and the guard force will be a bunch of SS with Schmeissers and Kar98s. The train pulling the cars will be a steam engine. Nothing special. The hard part is stopping it, and preventing collateral damage acceptable casualties.