Claim: Roald Dahl became an acting wing commander during World War II.

Roald Dahl -LRB- -LSB- langpronˈroʊ.əld _ ˈdɑːl -RSB- , -LSB- ˈɾuːɑl dɑl -RSB- ; 13 September 1916 -- 23 November 1990 -RRB- was a British novelist , short story writer , poet , screenwriter , and fighter pilot . His books have sold more than 250 million copies worldwide .   Born in Wales to Norwegian parents , Dahl served in the Royal Air Force during the Second World War , in which he became a flying ace and intelligence officer , rising to the rank of acting wing commander . He rose to prominence in the 1940s with works for both children and adults and he became one of the world 's best selling authors . He has been referred to as `` one of the greatest storytellers for children of the 20th century '' . His awards for contribution to literature include the 1983 World Fantasy Award for Life Achievement , and the British Book Awards ' Children 's Author of the Year in 1990 . In 2008 , The Times placed Dahl 16th on its list of `` The 50 greatest British writers since 1945 '' .   Dahl 's short stories are known for their unexpected endings and his children 's books for their unsentimental , macabre , often darkly comic mood , featuring villainous adult enemies of the child characters . His books champion the kind-hearted , and feature an underlying warm sentiment . Dahl 's works for children include James and the Giant Peach , Charlie and the Chocolate Factory , Matilda , The Witches , Fantastic Mr Fox , The BFG , The Twits and George 's Marvellous Medicine . His adult works include Tales of the Unexpected .