The Nafziger Collection of Orders of Battle is a large research compilation of military organizational data covering the period from approximately 1600 to 1945, assembled by military historian George Nafziger.
The collection consists of more than 7,000 individual documents (primarily PDF files) that reconstruct the structure of armies in specific campaigns and battles, commonly referred to as “orders of battle.” These records typically break down military forces to the regimental level, detailing unit composition, command structure, and sometimes strength figures and artillery allocations.
A central feature of the collection is its wide chronological and geographical scope, beginning in the early modern period and extending through the Second World War. It includes material on European, American, and other global military forces, with particular emphasis on structured battlefield organization.
The compilation originated from Nafziger’s interest in the Napoleonic Wars, but expanded significantly due to demand from researchers, historians, and the wargaming community. As a result, it became a major reference resource for reconstructing historical military formations in detail.
Sources used in the collection vary widely and include published military histories, regimental studies, and archival documents, with a strong emphasis on primary-source material where available. This allows for detailed reconstruction of unit organization across different eras, though completeness and level of detail vary depending on the period.
