There can be no doubt that to Sir Howard’s activity in Galicia the successful issues of Lord Wellington’s campaign, in the early summer of 1812, were greatly owing. Had he not managed to find employment for two whole divisions of French infantry, these, with a division of cavalry, must have joined Marmont’s army; in which case the battle of Salamanca would have either not been fought at all, or it might have ended less triumphantly than it did. But no man can work impossibilities; and the time arrived when, having accomplished the main purpose of his mission, Sir Howard received orders to return to England. He could not quit the Peninsula, however, without once again communicating with Lord Wellington, whom he found just about to undertake the siege of the Castle of Burgos. To Douglas’s practised eye the place appeared of immense strength in proportion to the means disposable for its reduction; and a private reconnaissance led him to conclude that the whole plan of attack was faulty. In both opinions he stood alone; yet such was the respect in which his judgment was held, that the chiefs of artillery and engineers communicated what he had said to Lord Wellington, and Lord Wellington sent for him. The following is Mr Fullom’s account of this interview:—“‘Well, Sir Howard, you have something to say about the siege?’ ‘I think the place is stronger than we supposed, my Lord.’ ‘Yes, by G—; but our way is to take the hornwork, and from there breach the wall, and then assault over the two advanced profiles.’ ‘I would submit to your Lordship whether our means are equal to such an attack?’ ‘I am not satisfied about our ammunition,’ replied Lord Wellington. ‘The enemy’s guns are 24-pounders, my Lord, and we have only three 18-pounders and five 24-pound howitzers. The 18-pounders will not breach the wall, and our fire must be overpowered, unless your Lordship brings up some guns from the ships at Santander.’ ‘How would you do that?’ ‘With draught oxen as far as the mountains, and then drag them on by hand; we can employ the peasantry, and put a hundred men to a gun.’ ‘It would take too long.’ ‘I think the place may be captured, with our present means, from the eastern front, my Lord,’ returned Sir Howard; and he disclosed his plan, with his reasons for thinking it the most practicable. Lord Wellington made no remark. Possibly he saw the defects of his own plan, but it had been deliberately adopted, and he was not convinced that it ought to be abandoned.”