Question: What nationality was the film score composer who worked on a 2017 World War II film by Christopher Nolan?

Context articles: Hans Zimmer
Saraswati Devi (music director)
James Dooley (composer)
Batman Begins (soundtrack)
Tom Hardy
David Julyan
Interstellar (soundtrack)
The Prestige (film)
Dunkirk (2017 film)
King Rat (film)

Hans Florian Zimmer (] ; born 12 September 1957) is a German film score composer and record producer.
 Since the 1980s, he has composed music for over 150 films.
 His works include "The Lion King", for which he won the Academy Award for Best Original Score in 1995, the "Pirates of the Caribbean" series, "The Thin Red Line", "Gladiator", "The Last Samurai", "The Dark Knight Trilogy", "Inception", "Interstellar" and "Dunkirk".
Saraswati Devi, born Khorshed Minocher-Homji (1912 – 1980), was an Indian film score composer who worked in Hindi cinema in the 1930s and 1940s.
 She was one of the few female composers, working with Bombay Talkies, and is most noted for her score, "Mein Ban ki Chiriyra Banke Bun Bun Bolun Re" ("Achut Kanya" 1936).
 She was the second female music director in the Indian film industry, after Jaddan Bai.
James Michael "Jim" Dooley (born August 22, 1976 in New York City, New York) is an American film score composer.
 Dooley studied music at New York University, majoring in music composition.
 After finishing the university he moved to Los Angeles, where he studied music with prolific film score composers Christopher Young, Elmer Bernstein and Leonard Rosenman.
 In 1999, he started working for Hans Zimmer as his chief technical assistant.
 He works in Santa Monica, in Hans Zimmer's film music studio Remote Control Productions (formerly "Media Ventures").
 He composed, arranged, and orchestrated music for films like "" and "The Da Vinci Code".
 He also composed music for "inFAMOUS 2", the Epic Mickey series and worked with Celldweller and Tarja Turunen.
 He released his debut album, "Veiled Nation", in 2013.
Batman Begins: Original Motion Picture Soundtrack is the soundtrack album to Christopher Nolan's 2005 film "Batman Begins".
 It was released on June 15, 2005.
 The soundtrack drew from the film score, composed by Hans Zimmer and James Newton Howard, as well as contributions by Ramin Djawadi, Lorne Balfe and Mel Wesson.
(born 15 September 1977) is an English actor and producer.
 His motion picture debut was in Ridley Scott's 2001 action film "Black Hawk Down".
 Hardy's other notable films include the science fiction film "" (2002), the crime film "RocknRolla" (2008), biographical psychological drama "Bronson" (2008), sports drama "Warrior" (2011), Cold War espionage film "Tinker Tailor Soldier Spy" (2011), crime drama "Lawless" (2012), drama "Locke" (2013), mobster film "The Drop" (2014), and the biographical western thriller "The Revenant" (2015), for which he received an Academy Award nomination for Best Supporting Actor.
 He portrayed "Mad" Max Rockatansky in the post-apocalyptic film "" (2015), and both of the Kray twins in the crime thriller "Legend" (2015).
 He has appeared in three Christopher Nolan films: the science fiction thriller "Inception" (2010), the superhero film "The Dark Knight Rises" (2012), as Bane, and the action-thriller "Dunkirk" (2017), based on the British evacuation in World War II.
 Hardy has been cast as Eddie Brock/Venom in a live-action film adaptation of the same name, set to be released in 2018.
David Julyan (born 1967 in Cheltenham) is an English musician and film score composer.
 He has composed the scores to several Christopher Nolan films including "Following", "Memento", "Insomnia" and "The Prestige", a collaboration that began with the short film "Larceny".
Interstellar: Original Motion Picture Soundtrack is the soundtrack album to the 2014 film "Interstellar" directed by Christopher Nolan.
 The film score is composed by Hans Zimmer who previously scored Nolan's "Batman" film trilogy and "Inception".
 The soundtrack garnered critical acclaim.
 Prior to its digital release, it was nominated for an Academy Award and Original Score at the Hollywood Music in Media Awards.
 The soundtrack was released on November 17, 2014 via the WaterTower label.
The Prestige is a 2006 British-American mystery thriller film directed by Christopher Nolan, from a screenplay adapted by Nolan and his brother Jonathan from Christopher Priest's 1995 novel of the same name.
 Its story follows Robert Angier and Alfred Borden, rival stage magicians in London at the end of the 19th century.
 Obsessed with creating the best stage illusion, they engage in competitive one-upmanship with tragic results.
 The film stars Hugh Jackman as Robert Angier, Christian Bale as Alfred Borden, and David Bowie as Nikola Tesla.
 It also stars Scarlett Johansson, Michael Caine, Piper Perabo, Andy Serkis, and Rebecca Hall.
 The film reunites Nolan with actors Bale and Caine from "Batman Begins" and returning cinematographer Wally Pfister, production designer Nathan Crowley, film score composer David Julyan, and editor Lee Smith.
Dunkirk is a 2017 war film written, co-produced, and directed by Christopher Nolan that portrays the Dunkirk evacuation of the Second World War.
 Its ensemble cast includes Fionn Whitehead, Tom Glynn-Carney, Jack Lowden, Harry Styles, Aneurin Barnard, James D'Arcy, Barry Keoghan, Kenneth Branagh, Cillian Murphy, Mark Rylance, and Tom Hardy.
 Distributed by Warner Bros.
 Pictures, the film is a co-production between the United Kingdom, the United States, France, and the Netherlands.
King Rat is a 1965 World War II film directed by Bryan Forbes, and starring George Segal as Corporal King and James Fox as Marlowe, two World War II prisoners of war in a squalid camp near Singapore.
 Among the supporting cast were John Mills and Tom Courtenay.
 The film was adapted from James Clavell's novel "King Rat" (1962), which in turn is partly based on Clavell's experiences as a POW at Changi Prison during the Second World War.