The war that drained Napoleon's armies and set the stage for his ultimate defeat at Waterloo. The Peninsular War in Spain and Portugal was the most bitterly fought contest of nineteenth-century Europe. From 1808 to 1814, Spanish regulars and guerrillas, along with British forces led by Sir John Moore and the duke of Wellington, battled Napoleon's troops across the length and breadth of the Iberian Peninsula. Napoleon considered the...