It just doesn't show enough. So much about this film is still wrapped in mystery. Knowing that Cillian Murphy and Tom Hardy are in this film makes it more attractive to me even though war films aren't one of my favorite types of subject matters. I'd like to see how Dunkirk measures up to Mel Gibson's Hacksaw Ridge and Clint Eastwood's American Sniper depicting war historical wars. OR will Dunkirk be like Apocalypse Now or Platoon? Well find out closer to its release date. Here's an article from The Wrap http://www.thewrap.com/christopher-nolan-dunkirk-little-dialogue/

The Wrap's article and many recent others are based on Nolan's big interview with the French magazine Premiere.
Here is the full original Premiere magazine interview, human-translated from French to English (2 sequential posts - first the intro then the Nolan interview):

http://www.themoviedb.org/movie/374720-dunkirk/discuss/58a520ffc3a3684e7800282e#58b5d8369251410dcc000118

Nolan does not discuss any of the actors. He talks about there being no backstories for the characters, little dialogue, three "temporalities", and a lot of suspense. Having followed along with pre-production and production, I expect it to be a stunning experience for the eyes, ears and nerves. Nolan, in a previous brief interview, said he wants to put the viewer on the beach, in the boat, in the cockpit. (For example, one crazy thing he did was bolt a scaffold and the IMAX camera right on the wing of a vintage plane so the IMAX could film into the cockpit during flight. I also saw a photo of Nolan, Hoytema and the IMAX practically in the middle of an explosion on the mole (pier), with Nolan only protected by a raincoat, safety glasses and a borrowed 1940 helmet.)

IMO Dunkirk will not be like Hacksaw Ridge. In a Taboo interview (the The Wrap), Tom Hardy described it as Nolan making a classic war movie, like those of the 40's and 50's. I think Nolan's movie will have plenty of violence and death but avoid close-up gore.

What can you tell us about “Dunkirk”?
It’s a very profound story. What’s lovely about it is that it’s a classic film, it’s so epic in the storytelling, and Chris [Nolan] has gone back to an old school film from the 1940s, 1950s and retold it. Just being there, you can see the effort in this huge orchestration. I was just in my own play – I had limited exposure to cast and crew. And there was also a lot of pressure, in the same way. I grew up in the generation of their granddads talking about the war. Everyone was colored by that experience — Dunkirk was a big turning point in the war.
http://www.thewrap.com/tom-hardy-taboo/

Tom Hardy is part of an ensemble cast of 11: Tom Hardy, Cillian Murphy, Sir Mark Rylance, Kennth Branagh, Fionn Whitehead, Aneurin Barnard, Harry Styles, Jack Lowden, James D'Arcy, Barry Keoghan, Tom Glynn-Carney. Of those, unknown 19-year-old may be the only lead - hard to tell at this point, but Nolan called Fionn the "star" of the movie, and the early Warner Brothers press release during casting stated that the cast would be "headed by yet-to-be-cast unknowns".

A couple of previous articles where Tom mentioned Dunkirk:

http://www.vanityfair.com/hollywood/2017/01/tom-hardy-taboo

Still, Hardy can probably work with any director he wants. He’s set for a third reunion with Christopher Nolan this summer when W.W. II drama Dunkirk hits theaters. That is one director he prefers not to fight with. “He’s too important to argue with a peon like me,” Hardy says with a laugh. “He wouldn’t stoop so low as to have an argument with a bag snatcher like myself. He’s a kingpin.”

Dunkirk, which stars Hardy as a spitfire pilot, also stars young One Direction singer Harry Styles in his first film role. Unfortunately, the pair didn’t really work together on the set. “I met him once, really briefly. It was lovely, big hug,” Hardy says. “He’s very polite and just a sweet guy.”

Nolan, however, was “very effusive” about Styles, Hardy continues. “And that’s not easy, to come in from a very specific department in the industry, and cross over. So poor guy is gonna be judged. I wouldn’t want to be in those shoes, but from what I hear is that, actually, it’s gonna be a very comfortable transition for him, because he’s done such great work—which is really a testament, not only to his skill as an artist, [but] also Christopher’s part in that as well. . . . One Direction aside, do you know what I mean? Which I can’t say I know an awful lot about.”

After working with Nolan on three films now, Hardy is an expert at handling secretive sets and rumors—like one whisper campaign claiming he’s set to appear in the next Star Wars film as a stormtrooper. “That’s like Nolan territory. I can’t tell you anything. And it’d be good to know myself,” he says with a laugh, denying the gossip.

http://www.chron.com/entertainment/the-wrap/article/Tom-Hardy-Talks-Taboo-One-of-the-Most-10848998.php

It’s a very profound story. What’s lovely about it is that it’s a classic film, it’s so epic in the storytelling, and Chris [Nolan] has gone back to an old school film from the 1940s, 1950s and retold it. Just being there, you can see the effort in this huge orchestration. I was just in my own play – I had limited exposure to cast and crew. And there was also a lot of pressure, in the same way. I grew up in the generation of their granddads talking about the war. Everyone was colored by that experience — Dunkirk was a big turning point in the war.