Sgt. Rock, hero of the European Theatre, and his Easy Company find themselves dispatched into enemy territory to face off against the strangest, most horrific enemies they've encountered yet: Nazi Zombies.

Source: https://comicbook.com/movies/news/bruce-campbell-pitched-sgt-rock-vs-the-army-of-the-dead-movie-to-sam-raimi-exclusive/

The scenes in question feature David Schwimmer's Captain Sobel, giving the different members of Easy Company a particularly rough time during training, and Christian reveals that not every aspect of this is accurate.

Source: https://screenrant.com/band-of-brothers-boot-camp-expert-accuracy-response/