On the 9th of August, Sir Arthur Wellesley made his first movement from the Mondego, and reached Leyria on the 10th; he halted two days to make the necessary arrangements for his advance, and to bring up the Portuguese who were at Coimbra. On the 13th he moved to the ground about Batalha, where a patrole of French, from the corps under General La Borde, at Alcobaça, was first discovered. General Frere, who commanded the Portuguese, here made an objection to advance any further, stating, as his reason, the improbability of finding provisions. Sir Arthur Wellesley was not disconcerted by this defection: after attempting in vain to alter General Frere’s determination, he decided to move forward, taking with his army a detachment of 1,600 men, from the force under that officer’s command, which he placed under the orders of Colonel Trant, and which Sir Arthur undertook to provision. These arrangements being made, he advanced to attack the corps that occupied Alcobaça; the enemy had, however, abandoned it in the night, and the British army took up its position upon the heights beyond it. The next day the army moved forward to Caldas; the advance, under Brigadier General Fane, to Obidos; where some skirmishing took place between the light troops under his orders, and the French rear. On the 17th Sir Arthur Wellesley moved to attack General La Borde, who had not as yet been joined by the force under General Loison, which was marching by Alemquer, to effect that object. General La Borde was posted at Roliça, in a strong position upon some heights which covered the road from Obidos to Lisbon. Sir Arthur first formed his army in columns of battalions, behind Obidos, from thence he detached the light troops, under Brigadier-General Fane, supported by Major General Ferguson’s brigade, along some heights which led to the right of the enemy’s position. The rest of the army passed through Obidos, and advanced along the plain towards Roliça. The enemy was first discovered, drawn up at the foot of the hill, and in front of the position; but upon seeing our advance he retired to the heights.