On March 12th Montbrun was prowling ineffectively along the south bank of the Mondego, and setting his horse artillery to engage in a futile exchange of fire with Trant’s guns, while a battalion of infantry borrowed from Junot tried to creep upon the bridge, but was detected and driven off by grape. But Ney was already engaged in such sharp fighting at Redinha that he could not have drawn his troops off, or have escaped towards Coimbra, even if the passage of the Mondego had been forced. Wellington, it will be remembered, was advancing towards the 6th Corps in the morning, when he found that it had retired from Venda da Cruz on to another position. His cavalry discovered that not only was he in presence of the 6th Corps, but that another French column was on his flank at Rabaçal (this was Loison’s division). Moreover, the 8th Corps was known to be not far off, for stragglers and sick from it had been picked up upon the preceding day. Seeing therefore that he might be called upon to face some 30,000 men, the British general resolved not to open the fight over hastily. When his three leading columns came up, Pack in the centre, Picton on the right, the Light Division on the left, they were halted in front of Mermet’s line, and deployed; but no attack was made till the 4th Division had reached the front line and joined Pack, while the 1st and 5th were close behind. Then, at two o’clock in the afternoon, an encircling attack was made on Mermet’s rearguard, the wings being thrown forward, while the centre was somewhat held back. The 3rd Division, entering the woods on the French left, the Light Division those on their right, advanced as quickly as they could through difficult ground. Pack and the 4th Division halted beyond musket-range of the centre, but suffered a little from artillery fire while waiting for the flank attacks to develop. After some twenty minutes of hot skirmishing among the trees, Mermet’s flanks were turned by Picton on the side of the hills, and by the Light Division on the side of the plain, and Ney hastily drew back his front line behind the stream and the defile, where Marchand’s division was waiting in support. The retreating battalions were somewhat jammed at the bridge, and lost heavily, while passing it only a few yards in front of the skirmishers of the Light Division. Picton tried to ford the stream higher up, in order to cut off the retreating force before it could reach its supports, but failed, the water turning out too deep and rapid for passage[173].