Napoleon's Wars_ An International History, 1803-1815 - Charles Esdaile [225]
British commitment to the Peninsula was not a given, therefore, but for the time being Wellington’s army fought on. Indeed, its achievements were considerable. Particular attention should be paid here to Wellington’s defence of Portugal in 1810-11. In accordance with France’s resumption of the offensive in the Peninsula in , the summer of that year saw some 65,000 men under Marshal Masséna move across the Portuguese frontier and besiege the fortress of Almeida. This fell very rapidly thanks to the chance explosion of its main powder magazine, and the French moved on towards Lisbon. Wellington had anticipated such a move and put together a comprehensive plan of defence. From the beginning the countryside in the path of the invaders would be devastated and the French forces harassed by the irregular home guard known as the ordenança. If possible, the French would then be brought to battle and forced to retreat, to which end the Portuguese army had been completely rebuilt under the direction of Sir William Beresford and the main routes towards Lisbon blocked by field works at a number of obvious defensive positions. Failing that, the countryside would continue to be devastated, while the Anglo-Portuguese army fell back on Lisbon, along with the bulk of the civilian population. Waiting for them would be probably the greatest single engineering feat in the entire Napoleonic era in the form of the so-called Lines of Torres Vedras, an impenetrable belt of fortifications stretching from one side of the peninsula on which Lisbon was built to the other. Whether this plan would have sufficed to hold off the French had they ever unleashed the sort of massive offensive that would have followed the final conquest of Spain is unclear - Wellington certainly had his doubts - but against the 65,000 men brought by Masséna, it was more than adequate. Despite the defenders achieving complete success on the battlefield itself, an attempt to turn the French back at Buçaco failed due to the marshal’s discovery of an unguarded track around Wellington’s northern front. But when the French reached the Lines of Torres Vedras they found that they could go no further. In this situation Masséna did his best, but through Wellington’s scorched earth policy his supplies collapsed and in March 1811 he abandoned his headquarters at Santarem and fell back on the Spanish frontier. Behind him he left scenes that were among the very worst the Napoleonic Wars had