The Kingdom of Bavaria provided the largest contingent among the German allied states during the Napoleonic era, with 30,000 soldiers, which played a decisive role in the campaigns of 1809 and 1812 due to its size. The authors present a comprehensive work in this book about the organization of the army and its individual units, their uniforms, the regulations for the formation and deployment of the units in the field, as well as the internal structure of the army. These descriptions are supplemented by an account of the military engagements of the Bavarians in the campaigns of 1806/07 against Prussia and Russia, in 1809 against Austria, in 1812 against Russia, and in 1813 against Prussia and Russia.