This wartime published booklet briefly describes the origins and development of parachutes. It refers to the use of parachutes for parachute troops and explains the idea did not originally come from the Germans, but from the Russians.
The short chapter 10 describes the then still brief history of parachute troops in combat in Finland, Norway, Belgium, Holland and Crete.
Interestingly, the author explains how US Army parachute troops might be used in a defensive role to protect mainland USA in case of a foreign invasion. He further explains how US training of parachutists differs from that of the Germans.
The rest of the booklet deals with other air force and commercial flight use and maintenance of parachutes.