The Armies of Westphalia and Cleves-Berg, 1806–15 by George F. Nafziger is a detailed military reference study of the armed forces of two Napoleonic-era German states: the Kingdom of Westphalia and the Duchy/administrative region of Cleves-Berg under French influence.
The work is part of Nafziger’s broader series of order-of-battle compilations, focusing on the structure, organization, and composition of armies during the Napoleonic Wars. It reconstructs unit organization down to regimental and sometimes battalion level, making extensive use of archival sources and published military records.
A central focus is the military system created under Napoleonic administration in Germany after 1806, particularly the Westphalian army established by Jérôme Bonaparte. The study outlines infantry, cavalry, artillery, and guard formations, along with their command structures and administrative organization.
The volume also documents the integration of these forces into French strategic operations, including participation in major Napoleonic campaigns. It highlights issues such as recruitment, conscription, and the challenges of building effective armies from newly reorganized or politically diverse territories.
In addition, the work is notable for its orders of battle format, providing precise listings of units, commanders, and organizational changes over time. This makes it especially valuable for military historians and researchers working on Napoleonic campaign analysis.
