Before you is a unique essay on the history of the Second World War, prepared by direct participants in the events - senior officers and generals of the German Wehrmacht. This publication covers in detail the Polish, Norwegian and other most important campaigns of the German army, the war with the Soviet Union, presents a complete professional analysis of the causes and consequences of the failures of the ground forces, examines in detail the weapons and personnel of the armies, and the command structure of the Wehrmacht. The course of the war was described by people who held responsible positions and were familiar with many behind-the-scenes problems that were not reflected in official reports and about which one could only guess. The book is equipped with comments that allow an objective assessment of events, visual diagrams, maps and rare photographs.