On the instructions of the Spanish general, Graham's force moved down from the position of Barossa to that of the Torre de Bermeja, about half-way to the Santi Petri river, in order to secure the communication across that river. While marching through the wood towards the Bermeja, Graham received notice that the enemy was advancing in force towards the height of Barrosa. As that position was the key of that of Santi Petri, Graham immediately countermarched, in order to support the troops left for its defence; but before the British force could get themselves quite disengaged from the wood, he saw to his astonishment the Spanish troops under La Pena abandoning the Barrosa hill, which the French left wing was rapidly ascending.