1917 is a 2019 British war film directed and produced by Sam Mendes, who co-wrote it with Krysty Wilson-Cairns. Partially inspired by stories told to Mendes by his paternal grandfather Alfred about his service during World War I, the film takes place after the German retreat to the Hindenburg Line during Operation Alberich, and follows two British soldiers, Will Schofield and Tom Blake, in their mission to deliver an important message to call off a doomed offensive attack. Mark Strong, Andrew Scott, Richard Madden, Claire Duburcq, Colin Firth, and Benedict Cumberbatch also star in supporting roles.

Sir Samuel Alexander Mendes is a British film and stage director, producer, and screenwriter. In 2000, Mendes was appointed a CBE for his services to drama, and he was knighted in the 2020 New Years Honours List.