In the meanwhile, events on the Continent had gone from bad to worse, and Napoleon, not content with the occupation of Portugal, had thrown off his alliance with Spain, marched on Madrid, and transferred his brother Joseph from the throne of Naples to that of Spain. England at once rose to the occasion, decided to free Portugal and Spain from the French yoke, and forthwith launched an expedition of about 25,000 men for the purpose. The 51st, having so recently returned from foreign service, was not included in the expeditionary force, which landed, on the 1st August (1808), on the Portuguese coast, near the mouth of the Mondego river, and commenced the advance on Lisbon. On the 16th the French were first encountered at Obidos, where a slight skirmish took place, and on the following day Sir Arthur Wellesley fought and won the battle of Roliça.[53] Without entering into the details of this the first campaign of the Peninsular War, we may mention that the British and Portuguese routed the French at Vimiera on the 21st August, and before the end of the month the enemy, by the Convention of Cintra, agreed to evacuate Portugal. After this the British army occupied Lisbon, and prepared for operations against the French in Spain. While these events were in progress, the 51st, chafing at having been left behind, were moved from Guernsey to Chichester, and before long had the satisfaction of receiving their orders for active service. CHAPTER VII. THE CORUNNA CAMPAIGN, AND AFTER. After the occupation of Lisbon, Sir Arthur Wellesley, deeming it improbable that the army would resume operations for some months, went home on leave of absence; and, a little later, Sir John Moore was given command of the British forces in Portugal. In October he received despatches from Government wherein he was informed that it had been decided to send Sir David Baird, with 10,000 men, to Corunna, and Moore was instructed to take the 20,000 British troops from Lisbon, and to form a junction with him forthwith, when, together with the Spanish army, he was to attack the French and drive them out of Spain. To carry out his orders Moore had a choice of routes; he could transport his force by sea to Corunna, or he could march through Portugal and Spain. The former plan he rejected, as being likely to cause delay; for, with sailing vessels and at such a season of the year, it was impossible to estimate the length of time that the voyage would occupy. He decided, therefore, to adopt the land route, knowing that, if necessary, he could send his ships up the coast to some port, which would then become his base, instead of Lisbon. Accordingly, he desired Baird to march south-east to meet him at a point to be afterwards named, probably either Valladolid or Burgos, but the exact spot depending on the movements of the French.