Director Sam Mendes' first movie since back-to-back Bond flicks Skyfall and Spectre was always going to be a big deal. But now, it's become an even bigger one with the addition of a raft of new cast members including Benedict Cumberbatch, Colin Firth, and Bodyguard's Richard Madden.

The World War 1 movie, titled 1917, will also give us a Sherlock reunion of sorts, as Moriarty actor Andrew Scott is among the new cast members, too. According to The Hollywood Reporter, Mark Strong (Kingsman: The Secret Service), Daniel Mays (Vera Drake), Adrian Scarborough (The King's Speech), Jamie Parker (Parade's End), rising star Nabhaan Rizwan (Informer), and movie newcomer Claire Duburcq have also jumped on board.

They join previously-announced stars George MacKay (Pride, Captain Fantastic) and Dean-Charles Chapman (Game of Thrones), who are playing young British soldiers on a single day at the height of the First World War. No other roles in the film have been revealed.

Mendes has co-written the film's screenplay with former Penny Dreadful staff writer Krysty Wilson-Cairns, and he's due to start shooting next week at various locations in England and Scotland. 1917 is set to open in U.S. theaters on December 25 of this year, so we don't have too long to wait. Bring it on!

Are you excited for 1917?