Masséna, as has been already mentioned, did not arrive at Salamanca till May 28th: he could not well have reached the front earlier, since the Emperor had only placed him in command in April. The long delay in the opening of the main campaign must, therefore, be laid to Napoleon’s account rather than to that of his generals. If he had suspected that every day of waiting meant that Wellington had added an extra redoubt to the ever-growing lines of Torres Vedras, it is permissible to believe that he would have hurried forward matters at a less leisurely pace. But his determination to conduct the invasion of Portugal in what he called ‘a methodical fashion’ is sufficiently shown by the orders sent to Salamanca on May 29. ‘Tell the Prince of Essling that, according to our English intelligence, the army of General Wellington is composed of no more than 24,000 British and Germans, and that his Portuguese are only 25,000 strong. I do not wish to enter Lisbon at this moment, because I could not feed the city, whose immense population is accustomed to live on sea-borne food. He can spend the summer months in taking Ciudad Rodrigo, and then Almeida. He need not hurry, but can go methodically to work. The English general, having less than 3,000 cavalry, may offer battle on ground where cavalry cannot act, but will never come out to fight in the plains[253].’ [253] Napoleon to Berthier, May 29, 1810. The Emperor then proceeds to add that with the 50,000 men of the 6th and 8th Corps, the cavalry reserve, &c., Masséna is strong enough to take both Rodrigo and Almeida at his ease: Reynier and the 2nd Corps can be called up to the bridge of Alcantara, from whence they can menace Central Portugal and cover Madrid. No order is given to bring up this corps to join the main army: it seems that the Emperor at this moment had in his head the plan, with which Wellington always credited him, of threatening a secondary attack in the Tagus valley. The 2nd Corps is treated as covering Masséna’s left, while on his right he will be flanked by Kellermann, who is to add to the small force already under his command in Old Castile a whole new division, that of Serras, composed of troops just arrived from France[254]. This, added to Kellermann’s dragoons, would make a corps of 12,000 men. In addition, as the Emperor remarks, by the time that the Army of Portugal is ready to march on Lisbon, it will have in its rear the 9th Corps under Drouet, nearly 20,000 men, who will be concentrated at Valladolid before the autumn has begun. There will be over 30,000 men in Leon and Old Castile when Masséna’s army moves on from Almeida, and in the rear of these again Burgos, Navarre, and Biscay will be held by the Young Guard, and by twenty-six 4th battalions from France, which were due to start after the 9th Corps, and would have made their appearance south of the Pyrenees by August or September.