"U-Boat Intelligence, 1914-1918" by Robert M. Grant is a nonfiction book published by Shoe String Press, Incorporated in 1969. This hardcover book delves into the history of military intelligence during World War I, specifically focusing on the U-boat operations of the German navy. With 192 pages, the book provides detailed insights and illustrations to enhance the reader's understanding of this significant period in history. Robert M. Grant's expertise in the genre of history and military topics make this book a valuable addition to any collection focusing on World War I.