This first volume begins with the political and military decisions and manoeuvres that led to war and follows the opening engagements up to the first great battles at Abensberg on 20 April, Eggmühl two days later and the storming of Regensburg on 23 April.

This volume is part of John Gill’s epic three-part history of the Franco-Austrian War of 1809 and that watershed year in the military history of the Napoleonic Wars. Each volume includes a preface or prologue, extensive appendices containing the orders of battle and notes, and an index.