Lord William now intent upon the siege of Tortoza wished lord Wellington to attack Mequinenza with a detachment of his army; but this the situation of affairs in Navarre and Guipuscoa did not admit of, and he soon discovered that to assail Tortoza was an undertaking beyond his own means. Elio when desired to gather provisions and assist in the operations demanded three weeks for preparation; all the Spanish troops were in want, Roche’s division, blockading Murviedro, although so close to Valencia was on half rations; and the siege of Tortoza was necessarily relinquished, because no great or sustained operation could be conducted in concert with such generals and such armies. Suchet’s fear of them was an illustration of Napoleon’s maxim, that war is an affair of discrimination. It is more essential to know the quality than the quantity of enemies. It was difficult for lord William Bentinck to apply his mind vigorously to the campaign he was conducting, because fresh changes injurious to the British policy in Sicily called him to that island, and his thoughts were running upon the invasion of Italy; but as the Spaniards, deceived by the movements of escorts and convoys, reported that Suchet had marched with twelve thousand men to join Soult, he once more fixed his head-quarters at Taragona, and, following lord Wellington’s instructions, detached Del Parque’s troops by forced marches upon Tudela. [Sidenote: September.] On the 5th of September the army entered Villa Franca, and the 12th, detachments of Calabrese, Swiss, German, and British infantry, a squadron of cavalry and one battery, in all about twelve hundred men under colonel Adam, occupied the heights of Ordal. At this place, ten miles in advance of Villa Franca, being joined by three of Sarzfield’s battalions and a Spanish squadron they took a position; but it now appeared that very few French troops had been detached; that Suchet had concentrated his whole force on the Llobregat; and that his army was very superior in numbers, because the allies, reduced by the loss of Del Parque’s troops, had also left Whittingham’s division at Reus and Valls to procure food. Sarzfield’s division was feeding on the British supplies, and lord William again looked to a retreat, yet thinking the enemy disinclined to advance desired to preserve his forward position as long as possible.