Fort Henrietta, which stood at a short distance from the town, was at this time besieged by the Moors, and two breaches having been made, and the works undermined, the garrison could not maintain the place; consequently a sally from the city was resolved upon, to give the garrison an opportunity of blowing up the fort, and of cutting their passage through the Moorish army to the town; and Captain Hume, Lieutenant Pierson, Lieutenant Bayley, four serjeants, and 80 private men, of DUMBARTON'S Regiment, were selected to form the forlorn-hope in the sally. Accordingly, at eight o'clock on the morning of the 12th of May, DUMBARTON'S veterans issued from the town, and made a gallant attack on the Moorish army; at the same time the garrison in the fort blew up the building, and rushed forward, sword in hand, to cut their passage through the barbarians. The conflict was sharp: the Moors came running forward in crowds to cut off this devoted band; yet these resolute Britons forced the first trench, and gained the second. This was, however, twelve feet deep; and while struggling to overcome the difficulty, Captain Trelawny and 120 men were killed by the Moors; and only forty-four officers and men succeeded in joining Captain Hume and his party of veteran Scots. This party was also attacked by several bodies of Moorish horsemen, who were all expert lancers; but the barbarians were repulsed. One Moorish chieftain rode over Captain Hume; but his horse fell, and the barbarian was immediately killed. The men continued skirmishing, and retiring in good order until they arrived under the protection of the guns of the fortress. The companies of DUMBARTON'S Regiment lost on this occasion fifteen men killed, and Captain Hume[59] and several men wounded. In a few days after this action a cessation of hostilities was agreed upon with the Moors for four months; and during the summer twelve additional companies of DUMBARTON'S Regiment arrived at Tangier, from Ireland, under the command of Major Sir James Hackett. The arrival of these celebrated veterans is thus announced in one of the publications of that period:--"After this landed the valorous Major Hackett with the renowned regiment of the Earl of Dumbarton; all of them men of approved valour, fame having echoed the sound of their glorious actions and achievements in France and other nations; having left behind them a report of their glorious victories wherever they came; every place witnessing and giving large testimony of their renown: so that the arrival of this illustrious regiment more and more increased the resolutions and united the courage of the inhabitants, and added confidence to their valour."[60]