A renowned historian captures the French experience of the Peninsular War through soldiers' unpublished memoirs and eyewitness accounts. While much has been written about the British campaigns of the Peninsular War, surprisingly little has been published in English on their opponents, the French. Now, using previously unseen material from the French army archives in Paris, Paul Dawson tells the story of the early years of the Peninsular War as never before. Eyewitness accounts of the Siege of Zaragoza and the Spanish defeats at Medellin and Ocaña are interspersed with details of campaign life and of struggling through the Galician mountains in pursuit of the British army. Dawson captures the perspectives of ordinary French soldiers and their beliefs about the war they were fighting for their Emperor. Napoleon's Peninsular War is a vital and unprecedented addition to our understanding of the war in Iberia.