Book where man is forced to run with others in the snow for hours. Possibly set during World War 2?

I could've sworn it was Slaughterhouse Five, but I reread SF recently and that's not it. I'm pretty sure it's set during world War 2, but the only thing I know for sure is that a man was forced to run in the snow for hours alongside other prisoners. Any time someone stopped running or collapsed, they were shot. I want to say they were running to concentration camps but I could be making that up. Any help would be greatly appreciated, I'd really like to read it again.

Edit: It was Night by Elie Wiesel! Thanks everyone for the help. I'm 50 pages into it.