After Napoleon's victories over Austria and Prussia, he rearranged the map of Germany. In 1807, he created the Kingdom of Westphalia as a model state within the Confederation of the Rhine. The Kingdom, with its French-based internal organization, was supposed to serve as a model for the desired structures of the other member states of the Confederation of the Rhine. Napoleon's brother, Jerome Bonaparte, was installed as Westphalia's king. The Kingdom was essentially assembled from the conquered lands of the Electoral Principality of Hesse, the Principality of Brunswick-Wolfenbuttel and the Prussian territories east of the Elbe River. In 1810, the territories of the former Electoral Principality of Hanover were added. Because Napoleon considered the Confederation of the Rhine to be primarily a military alliance, the Westphalian Army was of special importance. Its army was also organized completely on the French model. The authors describe the army's structure and its employment, including its operations in Spain, Germany, and Russia. Yet the focus of the book is on providing a comprehensive depiction of the colorful uniforms of the individual units, as well as their military actions. Along with that, it addresses in detail the branches that are usually overlooked, like administration, medical service, national guard, gendarmerie, etc. The book draws on all the available sources in order to put together this very comprehensive overview. It is, without doubt, the definitive work on the Westphalian army. It is extensively illustrated with Peter Bunde's uniform graphics, contemporary images, maps, and photos of museum pieces (uniforms, equipment, etc.). It also contains order of battle, generals' biographies and other information drawn from myriad sources.

During the Napoleon era, the Kingdom of Bavaria among the France's German allied states, provided the largest contingent with 30,000 soldiers and due to its size took part in decisive fighting in the 1809 and 1812 campaigns. In this book, the authors present a comprehensive work about the organization and individual branches of the Bavarian Army, their uniforms, the regulations for its deployment and the missions of the individual branches in the field, as well as the army's internal structure. These descriptions are supplemented by accounts of the Bavarians' combat engagements in the campaigns of 1806-07 against Prussia and Russia, of 1809 against Austria, of 1812 against Russia, as well as of 1813 against Prussia and Russia.