one crushing victory at Salamanca, in the plains of Leon, so threatened the invader’s line of touch with France, that he had to abandon the whole south of Spain in order to concentrate an army large enough to force Wellington back from Burgos and the great northern road. On the other hand, one tremendous advantage possessed by the French in the central years of the war must be remembered. It is manifest that Madrid is the only really important road-centre in Spain, and that its undisturbed possession by the French in 1809-11 gave them the advantage of being able to operate from a single point, against enemies who lay in a vast semicircle around, with no good cross-roads to join them and enable them to work together. The small ‘Army of the Centre,’ which was always kept in and around Madrid, could be used as a reserve for any other of the French armies, and transferred to join it in a few marches, while it was infinitely more difficult to unite the various forces lying on an outer circle at Astorga, Almeida, Abrantes, and Cadiz, which the Spaniards and the British kept in the field. In short, in estimating the difficulties of the two parties, the advantage of the central position must be weighed against the disadvantage of long and exposed lines of communication. One of the cardinal blunders of Napoleon’s whole scheme for the conquest of the Peninsula was that he persisted in treating it as if it were German or Italian soil, capable of supporting an army on the march. His troops were accustomed to live on the country-side while crossing Central Europe, and therefore made no proper preparations for supplying themselves by other means than plunder. But in Spain there are only a few districts where this can be done: it may be possible to get forward without an enormous train of convoys in Andalusia, the coast plain of Valencia, and certain parts of the rather fertile plateau of Leon, the wheat-bearing _Tierra de Campos_. But over four-fifths of the Peninsula, an army that tries to feed on the country-side will find itself at the point of starvation in a few days, and be forced to disperse in order to live.