"Handy War Guide for My Company: Handy Company Commander's Guide" by Hanguillart is a practical military manual written during the early 20th century, specifically in the context of World War I. This guide serves as a resource for company commanders in the French Army, focusing on trench warfare tactics, routines, and infantry combat principles, reflecting the realities faced by troops during this tumultuous period. The book is structured into two main parts: the first part covers trench life and warfare, offering detailed instructions on essential procedures such as taking over trenches, maintaining sanitation, and conducting effective patrols. It also includes strategies for both offense and defense in trench scenarios, while the second part delineates the principles of French infantry combat, particularly in open warfare. Captain Hanguillart shares his experiential wisdom, derived from front-line operations, emphasizing the importance of discipline, organization, and adaptability in military engagements. Overall, the guide is a valuable resource for understanding the tactical and logistical aspects of warfare from a historical perspective. (This is an automatically generated summary.)