Christopher Nolan's Dunkirk Trailer Released

Christopher Nolan, the brilliant director behind "Interstellar," "Inception," and "The Dark Knight" Trilogy, is back with a new film: Dunkirk. It's based on a prominent moment from World War II in which allied troops -- Belgian, British, and French -- were stranded at the French city of Dunkirk, surrounded by the German army. With their backs against the ocean, it appeared as though the allied troops would die or be captured; however, the Germans halted their attack, giving the allied troops enough to time build-up their defenses, allowing 338,226 soldiers to be rescued in an eight-day span.

Dunkirk opens as hundreds of thousands of British and Allied troops are surrounded by enemy forces. Trapped on the beach with their backs to the sea they face an impossible situation as the enemy closes in.

"Dunkirk" features a prestigious cast, including Tom Hardy ("The Revenant," "Mad Max: Fury Road," "The Dark Knight Rises"), Mark Rylance ("Bridge of Spies," "The BFG"), Kenneth Branagh ("My Week with Marilyn," "Hamlet," "Henry V") and Cillian Murphy ("Inception," "The Dark Knight" Trilogy), as well as newcomer Fionn Whitehead. The ensemble cast also includes Aneurin Barnard, Harry Styles, James D'Arcy, Jack Lowden, Barry Keoghan and Tom Glynn-Carney.

The film is being produced by Nolan and Emma Thomas ("Interstellar," "Inception," "The Dark Knight" Trilogy). Jake Myers ("The Revenant," "Interstellar," "Jack Reacher") is serving as executive producer.

The behind-the-scenes creative team includes director of photography Hoyte van Hoytema ("Interstellar," "Spectre," "The Fighter"), production designer Nathan Crowley ("Interstellar," "The Dark Knight" Trilogy), editor Lee Smith ("The Dark Knight" Trilogy, "Elysium"), costume designer Jeffrey Kurland ("Inception," "Bullets Over Broadway"), and visual effects supervisor Andrew Jackson ("Mad Max: Fury Road").

Warner Bros. Pictures is distributing "Dunkirk" worldwide and has slated the film for a July 21, 2017 release.