Massena had suffered too heavily in his attempt on the British position, to think of attacking the Sierra de Busaco a second time. Early on the 28th September he commenced quietly retiring his advanced brigades, and in the evening, was reported to be marching with all his divisions on the Malhada road, after having set fire to the woods to conceal his movements, which was evidently intended to turn the British left. Orders were instantly given by Lord Wellington to abandon the Sierra; and at nightfall Hill’s division was again thrown across the river, the remainder of the brigades, defiling to their left, moved by the shorter road on Coimbra, and resumed the line of the Mondego on the 30th.
The celebrated proclamation to the Portuguese nation was issued by Lord Wellington previous to the commencement of his retreat. Determined to destroy any hope the French might have entertained of subsisting their armies on the resources of the country, the people were emphatically desired, on the approach of the enemy, to abandon their dwellings, drive off their cattle, destroy provisions and forage, and leave the villages and towns deserted of inhabitants and devastated of everything which could be serviceable to the invaders. Generally, these orders were obeyed with a devotion that seems remarkable. Property was wasted or concealed, and the shrine and cottage alike abandoned by their occupants, the peasant deserting the hearth where he had been nursed, and the monk the altar where he had worshipped from his boyhood. The fugitives accompanied the army on its march, and when it halted in the lines, one portion of the wanderers proceeded to Lisbon, while the greater number crossed the Tagus to seek on its southern shores a temporary retreat from those who had obliged them to sacrifice their possessions, and fly from the dwellings of their fathers.
Nothing could surpass the fine attitude maintained by the British in their retreat on Torres Vedras, and every march was leisurely executed, as if no enemy were in the rear. By the great roads of Leiria and Espinal the receding movement was effected; and, with the exception of some affairs of cavalry, and a temporary embarrassment in passing through Condeixa, occasioned by a false alarm and narrow streets, a retreat of nearly two hundred miles was effected with as little confusion as attends an ordinary march. No portion of the field equipage, no baggage whatever was captured, and still more strange, a greater number of prisoners were taken from the pursuers than lost by the pursued—a fact in the history of retreats without a parallel.
Massena, after a three days’ reconnaissance, and under the advice of his chief engineers, abandoned all hope of forcing this singular position. Nothing could surpass the chagrin and surprise that the French commander exhibited to his staff, when, by personal observation, he had ascertained the full extent of the defences with which British skill had perfected what nature had already done so much for. To attempt forcing Torres Vedras must have ensured destruction; and nothing remained, but to take a position in its front, and observe that immense chain of posts, which it was found impossible to carry.
Though by cavalry patrols on the right bank of the Tagus and the detachment of a division to Thomar, the French commander had enlarged the scope of country over which his foragers could operate, supplies failed fast; and even French ingenuity failed in discovering concealed magazines. Nothing remained but to retire from cantonments where provisions were no longer procurable; on the morning of the 15th the French army broke up, and, favoured by thick weather, retired in beautiful order on Santarem and Torres Novas.
Both armies went into cantonments; the allies with headquarters at Cartaxo, the French having chosen Torres Novas for theirs.
Little of military interest occurred for some time, excepting that the Portuguese militias, under their British officers, were incessant in harassing the French.
Time passed on, nothing of moment occurred, the British remaining quiet, in expectation of a reinforcement of troops from home.
The first movements that took place were an advance on Punhete by the allies, and the sudden retirement from Santarem by the French. Massena chose the left bank of the Mondego as his line of retreat, falling back on Guarda and Almeida. Wellington followed promptly; and on the 9th, Massena having halted in front of Pombal, the allies hastened forward to attack him. But the French marshal declined an action, and fell back pressed closely by the British light troops, and covered by a splendid rear-guard which he had formed from his choicest battalions, and intrusted to the command of Marshal Ney.
On the 5th of April Massena crossed the frontier. Portugal was now without the presence of a Frenchman, except the garrison of Almeida, and those who had been taken prisoners in the numerous affairs between the British light troops and the enemy’s rear-guard. Nothing could be bolder or more scientific than the whole course of Wellington’s operations, from the time he left the lines until Massena “changed his position from the Zezere to the Agueda.” Yet it must be admitted that the French retreat all through was conducted with consummate ability. Ney commanded the rear-guard with excellent judgment; his positions were admirably selected; and when assailed, they were defended as might have been expected from one who had already obtained the highest professional reputation.