Additional regiments were afterwards sent to the West Indies:[7] but nothing of importance took place, and the Twelfth were sent to the island of Jamaica, where they were stationed during the year 1704.
1705
The regiment sustained very serious losses from the effects of the climate, and, in 1705, it transferred the non-commissioned officers and soldiers fit for service, to the twenty-second foot, and the officers and a few of the serjeants returned to England to recruit.
1706
1707
1708
During the years 1706 and 1707, the regiment was employed in recruiting, training, and disciplining its ranks, and having attained a state of efficiency, it was reported fit for service, and in the spring of 1708, it was held in readiness to serve on board the fleet as marines.
During the summer, the regiment was encamped in the Isle of Wight, where it was reviewed, on the 19th of July, by Major-General Erle, and afterwards embarked on an expedition against the coast of France, the fleet being under the orders of Admiral Sir George Byng, and the land forces under Major-General Erle.[8] The fleet sailed from Spithead on the 27th of July, and menaced the coast of Picardy with a descent, creating considerable alarm and consternation; a landing was afterwards effected a few miles from Boulogne, but nothing of importance was accomplished.
In the mean time, the allied army, commanded by the great Duke of Marlborough and Prince Eugene of Savoy, was carrying on the siege of the celebrated city of Lisle, the capital of French Flanders, which was defended by fifteen thousand men, under Marshal Boufflers. The French and Spaniards, thinking to prevent the allied army receiving supplies from the coast, detached a body of troops, under General Count de la Motte, towards Ostend; and the troops employed in alarming the French coast, were suddenly ordered to proceed to that port, where they arrived on the 21st of September. The Twelfth, and other regiments of the expedition, having landed at Ostend, the French general retired; first cutting the dykes, to lay the country between Ostend and Nieuport under water, and to prevent the troops, under Major-General Erle, communicating with the grand army under the Duke of Marlborough. A strong detachment from the Twelfth, and two other regiments, seized on Leffinghen, constructed some works, and established a post at that village.
At this period, the army before Lisle was deficient in ammunition for carrying on the siege, and the Duke of Marlborough, having heard of the arrival of the troops at Ostend, and of their having established a post at Leffinghen, sent seven hundred waggons thither, under a strong guard, for supplies. The soldiers of the Twelfth, and other corps at Ostend, were employed in draining the inundations; they built a bridge over the canal of Leffinghen, opened a communication with the grand army, and assisted in loading the seven hundred waggons with ammunition and other necessaries.
The waggons left Ostend on the 27th of September; the troops employed to guard the convoy, under Major-General Webb, were attacked on the following day in the wood of Wynendale, by twenty-two thousand French and Spaniards, under Count de la Motte, who was repulsed, and the convoy arrived in safety at the head-quarters of the army. Major-General Webb received the thanks of Parliament for his conduct on this occasion.
The Duke of Vendôme was so chagrined at this success, that he advanced with a numerous army to Oudenburg, posted his men along the canal between Plassendael and Nieuport, and caused the dykes to be cut in several places, in order to let in the sea, and lay a great extent of country under water. The Twelfth, and other corps under Major-General Erle, were encamped on the high grounds of Raversein, and watched the enemy's movements; at length, the Duke of Marlborough put the covering army in motion, to attack the enemy, when the Duke of Vendôme made a precipitate retreat. The Twelfth were afterwards employed in conveying another supply of ammunition and other necessaries, for the besieging army, across the inundations in boats, which enabled the generals of the allied army to continue the siege of Lisle, and insured the reduction of that fortress. The Duke of Vendôme sent a body of troops to besiege Leffinghen, which was captured after a short resistance; the enemy also menaced the camp at Raversein, when the Twelfth, and other regiments under Major-General Erle, retired into the outworks of Ostend. The supplies furnished to the army, however, proved sufficient, and the citadel of Lisle surrendered on the 9th of December.