This novel follows the adventures of a group of young boys, known as the Airship Boys, who become involved in the events of World War I. At the center of the story is Bob Russell, a friend of the boys who finds himself in trouble behind enemy lines. The Airship Boys, using their knowledge of aviation and their trusty airship, embark on a daring mission to rescue him.The story takes the young heroes through dangerous war zones, where they face various challenges such as enemy forces, espion...