Napoleon, having by a series of brilliant battles gained supremacy over Central Europe, issued a decree against all commercial intercourse with Great Britain, but having lost any semblance of maritime power by the crushing defeat of Trafalgar (October 21st, 1805), this was a somewhat idle procedure. Portugal declining to carry out his Imperial decrees, Napoleon alleged that the house of Braganza no longer held power, and by cajoling the Spaniards into a false security led them to believe that they would participate in the spoils of Portugal; consequently they permitted an army under Marshal Junot to over-run Portugal, but Napoleon's ulterior object was to place his brother Joseph, King of Naples, on the throne of Spain, and in order to effect this purpose the weak-minded Charles IV and his son Ferdinand were induced to go to Bayonne, where Napoleon extracted from them the renunciation of the throne of Spain; meanwhile the Royal family of Portugal had fled to Brazil. On July 20th, 1808, Joseph Bonaparte entered Madrid, but the high-spirited Spaniards refused to accept him, and established a "junta" at Seville, declared Ferdinand VII king, and drove Joseph out of Madrid within a fortnight. The Spaniards, however, felt unequal to dealing with the usurper, and appealed to England, and not in vain--for an army of 10,000 men was speedily dispatched, under Sir Arthur Wellesley, who fought his first successful battle against the French in Spain on August 17th, 1808. =Roleria.=--This was the battle of Roliça, erroneously called Roleria through a mistake in dispatches, and maintained on the colours ever since, when General Laborde was driven from the position he held. The following regiments took part in the battle--5th, 6th, 9th, 29th, 32nd, 36th, 38th, 40th, 45th, 60th, 71st (known with the 43rd as the "Glasgow Light Infantry," owing to the number of Lowland Scots in the regiments), 82nd, 91st, and the Rifle Brigade, which, as Wellesley stated in his dispatch, had just been formed, but the brunt of the fighting fell on the 5th, 9th, 29th, Riflemen of the 60th and the 95th, and also the flank companies of Major-General Rowland (afterwards Viscount) Hill's Brigade. Meanwhile Marshal Junot, the French Commander-in-Chief, decided to brook no delay, and advanced to attack Wellesley, who was at this time at the Vimiera heights near the Maceria River.