FORE:On the 1st of September Wellington marched out of Madrid, and directed his course towards Valladolid, leaving, however, Hill in the city with two divisions. He then proceeded towards Burgos, and, on the way, fell in with the Spanish army of Galicia, commanded by Santocildes, ten thousand in number, but, like all the Spanish troops, destitute of discipline and everything else which constitutes effective soldiersclothes, food, and proper arms. Clausel quitted Burgos on the approach of Wellington, but left two thousand, under General Dubreton, in the castle. Wellington entered the place on the 19th, and immediately invested the castle. The French stood a desperate siege vigorously, and after various attempts to storm the fort, and only gaining the outworks, the news of the advance of the army of the north, and of that of Soult and King Joseph from the south, compelled the British to abandon the attempt. General Ballasteros had been commanded by the Cortes, at the request of Lord Wellington, to take up a position in La Mancha, which would check the progress of Soult; but that proud and ignorant man neglected to do so, because he was boiling over with anger at the Cortes having appointed Lord Wellington Commander-in-Chief of the Spanish armies. General Hill, therefore, found it prudent to quit Madrid, and fall back on Salamanca; and Lord Wellington, on the 21st of October, raised the siege of the castle of Burgos, and moved to Palencia, to be near to General Hill. At Palencia Lord Dalhousie joined him with a fresh brigade from England; and he continued his retreat to the Douro, pursued briskly by the French, under General Souham. At Tudela Souham halted to wait for Soult, who was approaching.