Martin Falconer had one big anxiety: would they let him fly again? Grounded in England at the beginning of 1918, it was a struggle, for escaped prisoners of war weren’t generally allowed to return to the front, but Martin pestered the authorities and, at last, found himself back in France.
From Wikipedia: John Harris was a British author. He published a series of crime novels featuring the character Inspector Pel, and war books. He wrote with his own name, and also with the pseudonym of Mark Hebden. His 1953 novel The Sea Shall Not Have Them was the basis for a feature film of the same name in 1954. He was the father of Juliet Harris, who published more Inspector Pel books under the name of Juliet Hebden.