This book is one Volume from a series of books "US Army In World War II. This is the second of a group of three signal corps  Volumes. Volume two is titled "The Test". Kent Roberts general editor. Published by The Office Of The Chief Of military History, Department Of the Army, 1957. HB book with 621 pages. Reprinted in 1971.  The book is in very good collectible condition. Several other books from this series will be listed. Questions answered. Thank You for looking.