In 1940–1, he accompanied Orde Wingate on his mission to Fascist-occupied Ethiopia during the Second Italo-Ethiopian War, and wrote a book of his experiences called Guerrilla War in Abyssinia.
In 1940–1, he joined Orde Wingate on his mission to Fascist-occupied Ethiopia during the Second Italo-Ethiopian War and authored a book about his experiences titled Guerrilla War in Abyssinia.