A headquarters is the brain which controls and coordinates the various arms and departments of an army. This book, which is one of the two volumes, covers the imperial headquarters of the French Napoleonic Grand Army, is written by Ronald Pawly and illustrated by Patrice Courcelle. It is 64 pages long, with 8 beautifully done color plates. There is a selected bibliography on page 57 and an index on page 64. The book is divided into several chapters. Chapter 1: Introduction; Chapter 2: Imperial Headquarters, which is subdivided into several sections: The Military Household; The Emperor's Cabinet (Secretariat, Intelligence Office, Topographical Office); The Civil Household; Chapter 3: Army General Headquarters, which is subdivided into several sections: Marshal Berthier's Cabinet, Berthier's Private Military Staff, Army General Staff, Army Administration; Chapter 4: Napoleon's Entourage on Campaign (1809:Remounts and Vehicles, Russia 1812, Napoleon's Immediate Entourage, Billets, The Imperial Tented Camp, Reducations of 1813, The Hundred Days, and Headquarters Unit).Pages 54 to 56 list the Army General Headquarters Nominal Roll on August 1, 1812. Of particular interest to me are the photogrpahs of a Berline coupe and landau on pages 31 and 32. Napoleon's transports are subjects that have recently been gaining attention by modelers and wargamers. This is a great introductory studies of an important but often overlooked area. Modelers, wargames and military history readers who are interested in the Napoleonic Wars period will find this book a valuable addition to their library or collection.