This book describes plans to defend Lisbon from invaders during the Peninsular War 1807-1814. Three different nations considered this challenge. First the French after their invasion of 1807. Second, the Portuguese after the French were ejected in 1808 and third, the British after the French were ejected in 1809.

Dr Mark S. Thompson has had a lifelong interest in the British army in the Peninsular War. He has made a special study of the campaigns of Marshal Beresford and the Battle of Albuera, and he has published a number of books on Peninsular subjects. Recently he completed a PhD on the role of the Royal Engineers in the Peninsula. He is a member of the British Commission for Military History, the Friends of the Lines of Torres Vedras and the Friends of the British Military Cemetery at Elvas. He is currently working on the diary of Edmund Mulcaster 1809-10.