On the other hand, I guess it's somewhat fair to call a one-sided portrayal of war crimes propaganda.
Among the worst of this worst is Fury, a film that includes the one-sided portrayal with dehumanized Nazis mixed in some distastefully sadistic fabrications of the side the film was attempting to glamorize. We see cold-blooded executions used as a masculine rite of passage, and if that weren't clear enough, it's followed up by the more explicit masculine rite of passage of sex with female plunder, under the subtle coercion of an implied gun barrel. Things like torture and rape occur in most, maybe all, war settings where morality becomes a liability. Fury perhaps exaggerates the normality of such incidents (one historian has estimated that only 1/3rd of allied soldiers witnessed an extrajudicial execution, far fewer participating), but what's insidious is that the film isn't interested in examining the human implications of such behavior, but instead in championing it as a masculine (or national?) prerogative, and this may be due to the fact that David Ayer is one of the more sociopathic filmmakers over the past decade (a decade that was more than a little sociopathically competitive), and such an attitude wouldn't be unusual in the kind of filmmaker who "also pushed the cast to physically spar each other, leading to black eyes and bloody noses". Ayer didn't "get" Fight Club apparently, and films like Fury are an abomination to the likes of soldiers like Lafayette G. Pool, the real life "war daddy" that Pitt's commander is based on, a man who never was witnessed or accused of mistreating a POW or plucking the locally bereaved, in fact his reputation is exactly the opposite of such things. I guess Ayer chose to fictionalize his characters because in reality they weren't hardcore enough to satisfy whatever front Ayer is desperately trying to maintain in his cos-bro fatigues.
tl; dr - The worst films in my view are those films which are competently and professionally made, consistently receive middling to mildly amusing reviews, and tacitly promote (rather than examine) such toxic, selfish, sadistic, consumerist self-flattering dogma that is embedded in the kind of cruelty that only a first-world leisure-class can believe they can afford. The number of films that fall into this cynical category of entertainment goes well beyind typical war films, from The Purge to Precious, normalizing and even encouraging our cruelest presumptions of other human beings.