Lieutenant-Colonel Claude Cunningham Bruce Marshall, known as Bruce Marshall was a prolific Scottish writer who wrote fiction and non-fiction books on a wide range of topics and genres. His first book, A Thief in the Night came out in 1918, possibly self-published. His last, An Account of Capers was published posthumously in 1988, a span of 70 years.
A great way to follow World War I and II from the viewpoint of a Catholic priest serving in the heart of Paris. Since it was written in 1948, a Latin and Greek dictionary might be helpful.