I do agree. The description, “A Mormon sniper and an atheist medic clash as their platoon struggles to survive behind Nazi lines.” bears only a faint resemblance to this film. I think it is an example of poor writing being done by some that is unfamiliar with their subject. I doubt that thy ever saw the movie, and if they did I don't think they understood it well at all.
The character Nathan 'Deacon' Greer was not a sniper, he was a good shot and maybe even a marksman or sharpshooter, but not a sniper. He was the religious guy in the group, but that is an iconic character in war films, like Shirley 'Shirl' 'Hickey' Kendrick was the farm-boy. The idea that Nathan was a Mormon was far from a big feature. So “Mormon sniper” is an astoundingly poor description. The conflicts that happened between Nathan and Steven, the medic, do not seem central or important during the movie. They can only be understood the be central to the story when looking back on them, after having seen the last few moments of the film. Nathan and Steven did not know each other until the first few moments of the film, they did not share a platoon.
So if we drop all of the material that is inaccurate or shouldn't be included for its spoiler status we get, “struggles to survive behind Nazi lines”. With a little work that can be, “A ragtag and battle-weary group of soldiers are thrust together and must depend on one another as they struggle to survive behind Nazi lines.”