The Osprey Men at Arms - Rome's Enemies (3) Parthians and Sassanid Persians Book is a military history book authored by Osprey, a well-known British publisher. This book, focusing on Rome's enemies, delves into the history and military tactics of the Parthians and Sassanid Persians, providing a detailed insight into these ancient civilizations at war. Written in English, this book is a valuable resource for history enthusiasts and military strategists alike.