Of his own Army of Aragon, Suchet, as we have thus seen, left nearly 14,000 men ‘present under arms’ to cover his rear. But this was not enough to make matters wholly secure, so untameable were the Aragonese and Catalans with whom he had to deal. Indeed, if this force only had been left to discharge the appointed task, it is clear, from subsequent happenings, that he would have suffered a disaster during his absence in Valencia. He asked from the Emperor the loan of half Reille’s division from Navarre, as well as the prompt sending to the front of Severoli’s Italians, who had been promised him as a reinforcement when first they entered Spain. The petition was granted, and these troops entered northern Aragon, and took charge of the places along the Ebro, while the expeditionary army was on its way to Valencia. Most of them were ultimately brought forward to the siege of the great city, and without them neither could Aragon have been maintained nor Valencia captured. Practically we may say that Suchet, at his original start, took 26,000 men to beat the Valencians and capture their city, but that he left nearly 30,000 more behind him, to hold down the provinces already conquered and to deal with the guerrilleros. Two main roads lead from the north to Valencia: the one, coming from Tortosa and Catalonia, hugs the coast of the Mediterranean, from which it is never more than a few miles distant. The other, far inland, and starting from Saragossa, follows the valley of the Xiloca among the hills of Southern Aragon, crosses the watershed beyond Teruel, and descends to the sea near Murviedro, where it joins the coast-road only a few miles north of Valencia. There is a third, and much inferior, route between these two, which starts from Mequinenza on the Lower Ebro, crosses the mountainous Valencian frontier near Morella, and comes down to the coast at Castellon de la Plana, twenty miles north of Murviedro. Of these roads the first was as good as any in Spain, and was suitable for all manner of traffic: but it had the disadvantage of being flanked at a distance of only two miles by the small but impregnable fortress of Peniscola, which lies on a rocky headland thirty miles beyond Tortosa, and of being absolutely blocked by the little town of Oropesa, twenty miles further south. Oropesa was no more than a ruinous mediaeval place, with two castles hastily repaired, without any modern works: but since the road passed through it, no heavy guns or wagons starting from Tortosa could get further south till its forts had been captured.