The role of the Royal Engineers in the Peninsular War has long been neglected and often misunderstood, and Mark Thompson’s history is the first full account of their work and of the contribution they made throughout the conflict. He draws on his unrivaled collection of the engineers’ letters and diaries in order to tell, in vivid detail, the story of the war as they experienced it. His narrative describes their role in all the major operations between 1808 and 1814, and it demonstrates the extraordinary range of tasks they undertook, from surveys and reconnaissance to the building of roads and bridges, siege works and field fortifications. His deeply researched study will be fascinating reading for anyone who is interested in the history of military engineering and a vital text for readers who are keen to broaden their understanding of the Peninsular War.