In the spring of 1761, the regiment proceeded up Lake Champlain in boats, marched from the shore of the lake to Albany, and afterwards sailed down the Hudson river to New York. In June it was encamped on Staten Island, and in October sailed for Barbadoes, where an expedition was assembled under Major-General Monckton, for an attack on the French island of Martinique, and the Fifteenth was one of the corps selected for this service.
1762
The expedition sailed from Carlisle-bay on the 5th of January, 1762, and a landing was effected on the island of Martinique in the middle of that month. The Fifteenth were actively employed in the operations necessary to bring the enemy to submission, and some severe fighting took place, in which the regiment had several men killed and wounded; Captain Prescott and Lieutenant Leslie, being among the latter. The governor, M. Le Vassor de la Touche, surrendered the island in February.
War having been declared against Spain, the regiment was attached to the armament under General the Earl of Albemarle, destined to attack the valuable settlement of the Havannah, on the island of Cuba. Passing through the straits of Bahama, the expedition arrived within six leagues of the Havannah on the 6th of June; a landing was effected on the following day; and on the 9th, the troops took up a position between Coximar and the Moro, a fort which it was deemed necessary to besiege and capture before an attack was made on the town. In this service, great hardships had to be endured; a thin soil, hardly sufficient to cover the troops in their approaches, a scarcity of water, and the labour of dragging the artillery several miles over a rocky country, and under a burning sun, called forth the efforts of the army and navy. The works were carried on, the sallies of the enemy were repulsed, and the Moro fort was captured by storm on the 30th of July. A series of batteries were erected against the town; and on the 11th of August they opened so well-directed a fire, that the guns of the garrison were silenced, and flags of truce were hung out from the town, and ships in the harbour. The terms of capitulation were agreed upon, and the British took possession of this valuable settlement, with nine men of war in the harbour, and two upon the stocks.
The regiment lost a number of men on this important service; Lieutenant Skene was among the killed; Captain Tyrwhitt and Lieutenant Winter died from the effects of climate.
After the capture of the Havannah, the regiment was stationed at that place eleven months.
1763
In the meantime a treaty of peace had been concluded, and in 1763 the Havannah was restored to Spain; the regiment was relieved by the Spanish troops which arrived to take possession of the colony, and embarked for New York, from whence it proceeded, by Albany and Lake Champlain, to Canada, where it was stationed several years.
1764
1765
1768