He wrote the book in New York City whilst still recuperating from his wounds during a propaganda publicity tour in the United States in 1941 organized by the British Government to attempt to raise support for the Allied cause and the U.S.A.'s entry into the war.
He wrote the book in New York City while recuperating from his wounds in 1941, as part of a propaganda campaign organized by the British government to rally support for the Allies and persuade the US to enter the war.