The product is a paperback book titled "Scots Armies of the 17th Century 1. The Army of the Covenant 1639-51" by author Stuart Reid. Published by Partizan Press in 1988, the book is a historical guide focusing on the army of the Covenant during the 17th century in Scotland. Written in English, this book provides insight into the military history and tactics of this specific period and country, making it a valuable addition to any history enthusiast's collection.