To take the field under circumstances like these was therefore impossible; and with the double object of restoring their wonted spirit to his troops, and checking the ravages which sickness and the casualties of war had made within his ranks, Lord Wellington embraced the opportunity of the enemy's inaction to take up his present position on the Tagus.
But while we were enjoying all the pleasures of a country life, enhanced tenfold by daily association with gay and cheerful companions, the master-mind, whose reach extended from the profoundest calculations of strategy to minutest details of military organization, was never idle.
Foreseeing that a period of inaction, like the present, must only be like the solemn calm that preludes the storm, he prepared for the future by those bold conceptions and unrivalled combinations which were to guide him through many a field of battle and of danger to end his career of glory in the liberation of the Peninsula.
The failure of the attack upon Badajos had neither damped his ardor nor changed his views; and he proceeded to the investment of Ciudad Rodrigo with the same intense determination of uprooting the French occupation in Spain by destroying their strongholds and cutting off their resources.
Carrying aggressive war in one hand, he turned the other towards the maintenance of those defences which, in the event of disaster or defeat, must prove the refuge of the army.
To the lines of Torres Vedras he once more directed his attention.

Engineer officers were despatched thither; the fortresses were put into repair; the bridges broken or injured during the French invasion were restored; the batteries upon the Tagus were rendered more effective, and furnaces for heating shot were added to them.
The inactivity and apathy of the Portuguese government but ill corresponded with his unwearied exertions; and despite of continual remonstrances and unceasing representations, the bridges over the Leira and Alva were left unrepaired, and the roads leading to them, so broken as to be almost impassable, might seriously have endangered the retreat of the army, should such a movement be deemed necessary.
It was in the first week of September.

I was sent with despatches for the engineer officer in command at the lines, and during the fortnight of my absence, was enabled for the first time to examine those extraordinary defences which, for the space of thirty miles, extended over a country undulating in hill and valley, and presenting, by a succession of natural and artificial resources, the strongest and most impregnable barrier that has ever been presented against the advance of a conquering army..