The Irregulars https://www.amazon.com/Irregulars-Roald-British-Wartime-Wash...

Those interested in Dahl might also be keen to note his career as a World War I flying ace, and then (again as a Military officer), World War II espionage agent sent by the British to nudge the Americans into war. As a member of the British Diplomatic Legation in Washington, DC he gained access to the Georgetown cocktail party circuit, and from there, helped build social consensus among many (including Mrs. Roosevelt) about the importance of an American entry into the War. No need to trust my word for it, check out Jennet Conant's fantastic book on the matter, "The Irregulars: Roald Dahl and the British Spy Ring in Wartime Washington" https://www.amazon.com/Irregulars-Roald-British-Wartime-Wash...