Since its release, 1917 has been taking the world by storm. Between winning the Best Motion Picture - Drama award at the Golden Globes, being praised by critics and fans alike, the film has become an instant hit. Taking audiences on an incredibly emotional and thrilling journey set during World War One, 1917 is one that everyone is talking about.

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With a stellar cast of experienced names being mixed expertly with up-and-coming young talent, the acting on display within the film is phenomenal. However, the most impressive aspect is the one-shot aspect, with this movie being shown as one long scene.

But while it is incredibly impressive to watch from the cinema, it isn't exactly the easiest thing to put into practice. There are many intricate details that people don't appreciate, but that isn't the only challenge that 1917 faced. Here are 10 things that you didn't know about the making of 1917.

Nine Minutes

Director Sam Mendes and screenwriter Krysty Wilson-Cairns on the set of 1917

Something that many fans of the film won't have even taken into consideration is the fact that the longest take they would shoot at one time was around nine minutes. This is quite lengthy for one scene, especially when you consider the fact that there would have been so many moving parts at each time.

While Sam Mendes didn't reveal exactly how many scenes they shot, he did reveal that it took 65 days to get everything done to the perfect level. With the longest take being nine minutes, Mendes has left it up to the fans to work out how many scenes took place.

Feeling Like One Camera

Director Sam Mendes with stars Dean-Charles Chapman and George MacKay on the set of 1917

Sam Mendes, along with acclaimed cinematographer Roger Deakins, and their team clearly used an array of different cameras throughout the filming of the movie. However, Mendes' main focus throughout the film was to try and make it feel like there was only ever one camera used, filming the entire thing as one.

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Those who have seen the movie will be able to testify that he certainly pulled off that challenge. The film really does feel like there is just one person and one camera following the entire movie, which is why it is so easy to connect to and feel immersed in the action.

Preparation

George MacKay and Dean-Charles Chapman in 1917

Heading out to film and act in this manner was certainly an incredibly difficult challenge. However, that was made slightly easier by the fact that they everyone involved had an intense training rehearsal schedule for six months prior to the actual filming.

This meant that everyone knew what to expect and how things would take place, rather than just being thrown into the deep end. That decision was certainly a wise one as it led to fewer mistakes taking place when things were going down properly and the cameras were rolling.

Thriller

While the movie is quite obviously about World War One, and is a true war movie, Sam Mendes says he went out of his way to make sure that it "is not a dry historical movie." While there is nothing wrong with that, as there are plenty of serious war films, 1917 isn't that.

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The film was made in a manner that if you know nothing about the war, it doesn't really matter. Sam Mendes told EW.com that 1917 was "constructed more like a thriller than a conventional war movie. It's not a combat movie."

Time Clock

Colin Firth in 1917

Taking the thriller aspect of 1917 one step further, Sam Mendes admitted that he wanted to tell the film within two hours of "real-time," making the entire film feel like a ticking-clock at times. The reason for this was to lock in the audience into the experience that the men go through.

Every second should have increased the tension and worry throughout the film. Of course, Mendes was also aware of the distance that they were travelling, and that had to be worked into the situation, which wasn't easy when there were no cuts within the film.

Most Difficult Thing

1917

1917 might go down as Sam Mendes' best movie to date, and rightfully so. However, the talented director also claimed that the film is "the most difficult thing technically" that he has done up to this stage in his career.

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While doing the difficult work won't have been easy, the fact that it created a masterpiece has certainly made it all worth it. Mendes stated that “the exhilaration and the excitement you feel when you actually do it is really huge.”

Piecing Together Stories

1917 Dean-Charles Chapman in Trench

1917 is not technically based on one individual true story, which is why it isn't branded as such. Rather, the film is based on a variety of different stories that Sam Mendes was told by his grandfather from his personal stories from World War One.

Mendes' grandfather did have to deliver messages between various posts at dusk. He had to move through no man's land, which obviously brought a high chance of death, and Mendes used this as a launching point for the plot in the movie.

Biggest Challenge

Soldier looking out from a trench in 1917

Taking on the challenge of getting everything filmed as one shot was always going to be incredibly difficult. That was a choice that Sam Mendes took on, and he admitted that the biggest challenge of all was having to deal with the terrain and doing intensive and sensitive scenes within one piece, rather than splitting them up and taking their time to get it nailed down perfectly.

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While it was a serious difficulty for everyone to get it perfect each time, the outcome was clearly worth the risk and effort.

The Weather

Dean-Charles Chapman and George MacKay in 1917

While the technical elements of making the movie were obviously always going to be incredibly difficult, one of the hardest parts was having to deal with the weather. Obviously, Sam Mendes wanted the movie to look a certain way, which meant that when the weather wasn't on his side, it had an effect.

With the one-shot method that they were trying to stick with, disruptions from situations like the weather were a problem. While the weather tends to play an issue on the set of any film, this was particularly hard work.

Lighter-Gate

While there were many complications and situations that people don't think about during the making of 1917, one of the biggest issues came from a cigarette lighter. Of all the things to cause an issue, the scene involving Fleabag's Andrew Scott was one of the biggest.

The faulty prop meant that he was unable to light his cigarette, which meant that an entire scene had to be re-shot. While that's not normally a big issue as scenes can be short, this was an entire sequence that was lengthy, meaning Scott's small role actually caused a bit of a headache.

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