But probably the main determining factor in Napoleon’s mind was the resolve that there should be no failure this time, for want of preparation or want of sufficient strength; that no risks should be taken, and that what he regarded as an overwhelming force should be launched upon Portugal. After Junot’s disaster of 1808 and Soult’s fiasco in 1809, the Imperial prestige could not stand a third failure. The old pledge that ‘the leopard should be driven into the sea’ must be redeemed at all costs on this occasion. Solid success rather than a brilliant campaign must be the end kept in view: hence came the elaborate preparations for the sustaining of Masséna’s advance by the support of Drouet, Kellermann, and Serras. Even Suchet’s operations in Eastern Spain were to be conducted with some regard to the affairs of Portugal[255]. It was a broad and a formidable plan--but it failed in one all-important factor. Wellington’s strength was underrated; it was no mere driving of 25,000 British troops into the sea that was now in question, but the reduction of a kingdom where every man had been placed under arms, and every preparation made for passive as well as for active resistance. When Napoleon was once more foiled, it was because he had treated the Portuguese army--a ‘_tas de coquins_’ as he called them--as a negligible quantity, and because he had foreseen neither that systematic devastation of the land, nor the creation of those vast lines in front of Lisbon, which were such essential features of Wellington’s scheme of defence. The French attack was delivered by 65,000 men, not by the 100,000 whose advent the British general had feared: and precisely because the numbers of the Army of Portugal were no greater, the attack was made on the Beira frontier only. Masséna had no men to spare for the secondary invasion south of the Tagus which Wellington had expected and dreaded. The Emperor’s plans went to wreck because he had under-estimated his enemy, and assigned too small a force to his lieutenant. But it was no ordinary general who had so prepared his defence that Napoleon’s calculations went all astray. The genius of Wellington was the true cause of the disastrous end of the long-prepared invasion. [255] See the curious dispatch no. 16651, of July 14, directing Suchet to be ready to send half his corps to Valladolid after he should have taken Tortosa. SECTION XIX: CHAPTER V THE MONTHS OF WAITING: THE SIEGE OF CIUDAD RODRIGO (MAY-JULY 1810)