Nevertheless after six days' rest he again advanced by the same line to the fort from which he had been forced to retreat. To prevent repetition of mishaps from ambuscades he gave strict orders that the advanced guard should throw out flanking parties on each side of the jungle-path. The injunction was disobeyed. The advanced guard walked straight into an ambuscade, two officers fell dead, the third, Adjutant-General Jackson, who was in command, turned and ran; the advanced guard fled headlong back on to the support; the support tumbled back on to the main body, and there, wedged tight in the narrow pass, the English were mown down like grass by the guns of the fort and the lances of the Spanish cavalry. At last an old colonel contrived to rally a few men in the rear, and advancing with them through the jungle fell upon the flank of the Spaniards and beat them back. He paid for his bravery with his life, but he assured the retreat of the rest of the force, which crept back beaten and crest-fallen to the ships, leaving several colours and three hundred dead men behind it. Venables and his men were now thoroughly cowed by failure and disease. Penn in vain offered to take the town with his sailors, but Venables and Winslow would not hear of it. All ranks in the fleet now abused the army for rogues, and the worst feeling grew up between the two services. Finally, on the 7th of May, the expedition sailed away in shame to Jamaica. Arrived there, Penn, openly saying that he would not trust the army, led the way himself at the head of the boats of the fleet; and after a trifling resistance the Island was surrendered by capitulation. Then fleet and army began to fight in earnest, officers as well as men; and at last, after the commissioners in command had spent six weeks in incessant quarrelling, Venables and Penn sailed home, leaving the troops and a part of the squadron behind them. [Sidenote: 1656.]