Roald Dahl on 13 September is celebrated as "Roald Dahl Day" in Africa, the United Kingdom and Latin America. In honour of Dahl, the Royal Gibraltar Post Office issued a set of four stamps in 2010 featuring Quentin Blake's original illustrations for four of the children's books written by Dahl during his long career; "The BFG", "The Twits", "Charlie and the Chocolate Factory", and "Matilda". A set of six stamps was issued by Royal Mail in 2012, featuring Blake's illustrations for "Charlie and the Chocolate Factory", "The Twits", "The Witches", "Matilda", "Fantastic Mr Fox", and "James and the Giant Peach". Dahl's influence
Roald Dahl every side". In May, as the Germans were pressing on Athens, Dahl was evacuated to Egypt. His squadron was reassembled in Haifa. From there, Dahl flew sorties every day for a period of four weeks, shooting down a Vichy French Air Force Potez 63 on 8 June and another Ju 88 on 15 June, but he began to get severe headaches that caused him to black out. He was invalided home to Britain. Though at this time Dahl was only a pilot officer on probation, in September 1941 he was simultaneously confirmed as a pilot officer and promoted to war