Between 1939 and 1945, close to 13 million men served in the German army - das Heer. The bulk of these men were infantrymen, who slogged their way, mostly on foot, from Finisterre to Moscow, Kirkenes to Tripoli. They swore unlimited obedience to Adolf Hitler and were ready to stake their lives for this oath: over 1.6 million men of das Heer were killed during the war and over 4.1 million were wounded.

English translation of the military manual that guided the German Army in World War II This book was carried into battle by officers and NCOs and had been classified by the U.S. Army until the year 2000 Topics include command, attack, defense, tanks, chemical warfare, logistics, and more Truppenführung ("unit command") served as the basic manual for the German Army from 1934 until the end of World War II and laid the doctrinal groundwork for blitzkrieg and the early victories of Hitler's armies. Reading it is as close to getting inside the minds behind the Third Reich's war machine as you are likely to get.

The Grande Armee of Napoleon Bonaparte is widely acknowledged to be one of the greatest fighting forces ever deployed. With it the French scored a streak of historic victories that gave them an unprecedented grip on power over the European continent. At its peak it was made up of 680,000 men, a huge multi-national force of officers, infantry and cavalry, artillery and support services masterminded by a superior and highly flexible system of corps, divisions, brigades and regiments, commanded by officers in which Napoleon placed a huge degree of trust and autonomy to operate within the outlines of his strategic objectives. Looking closely at how this military machine was constructed and mobilized, Napoleon's Military Machine Operations Manual examines all aspects of the Grande Armee, from individual soldiers, what they wore, ate, slept in and were paid, to the chain of command, recruitment and training, intelligence and comms, and logistics and battle tactics. The legacy of Napoleon’s army is assessed, as is how his organization and management initiatives influenced national armies around the world in ways that can still be seen today.

The Viking Warrior Operations Manual is an in-depth look at the Viking warrior culture, from 700 to 1066. It focuses on their origins and how they raided their way to expansion over much of the known world. The warrior culture, clan warfare, overlords and local kingdoms, their relationship with the sea and ships, raiding, harrying and assimilation are all covered in the book.

Samurai Warrior Operations Manual examines the Samurai world: the moral and psychological development of the warrior, the ethical standards they were meant to uphold, their training in both martial arts and strategy, and the enormous role that the traditions of Shintoism, Buddhism, Confucianism, and Taoism had in influencing samurai ideals. It also examines the more personal aspects of a Samurai warrior: what they ate, how they dressed, the weapons they used, their battle tactics, and the fascinating details of their day to day life.