Insurrectionary movements having been made by the negroes in the district of Mahaica, in the island of Demerara, in August, 1823, the TWENTY-FIRST FUSILIERS, under Lieut.-Colonel Leahy, were employed in reducing the revolted slaves to obedience, in which they succeeded. For their excellent conduct on this occasion, the TWENTY-FIRST received the thanks of Lieut.-General Sir Henry Ward, K.C.B., commanding in the Windward and Leeward Islands; of the Court of Policy of the Colony; of His Royal Highness the Duke of York, the Commander-in-chief; and of His Majesty King George IV. [Sidenote: 1824] From Demerara the head-quarters were removed to St. Vincent, in January, 1824, and received the thanks of Major-General Murray, previous to embarking. At the same time the Court of Policy voted, as a special and permanent mark of the high estimation in which the inhabitants of the Colony held the services of Lieut.-Colonel Leahy, the officers and soldiers, "FIVE HUNDRED GUINEAS TO BE LAID OUT IN THE PURCHASE OF PLATE FOR THE REGIMENTAL MESS," and TWO HUNDRED GUINEAS FOR THE PURCHASE OF A SWORD FOR LIEUT.-COLONEL LEAHY; also FIFTY GUINEAS FOR THE PURCHASE OF A SWORD FOR LIEUTENANT BRADY, who commanded a detachment at Mahaica, and whose cool, steady, and intrepid conduct, aided by the courage and discipline of his men, gave an early and effectual check to the progress of revolt in that quarter. In May, two companies were removed to Grenada. [Sidenote: 1827] In December, 1826, and January, 1827, the regiment embarked from St. Vincent and Grenada, for England, after eight years' service in the West Indies, during which period it had lost, by disease, fourteen officers and four hundred men. Previous to quitting those colonies, it received the expression of the approbation and thanks of Admiral Sir Charles Brisbane, G.C.B., Governor of St. Vincent; of the Council of that island; and of the Commander of the forces in the Windward and Leeward Islands. It landed at Cowes, in the Isle of Wight, in January, February, and March, and was removed to Windsor, where it had the honor of doing duty during His Majesty's residence at that place. [Sidenote: 1828] From Windsor the regiment was removed to Winchester, in the spring of 1828, and afterwards to Portsmouth; it was subsequently stationed at Bath, and in October embarked from Bristol for Ireland: it landed at Waterford, from whence it proceeded to Fermoy. [Sidenote: 1829] [Sidenote: 1830] The regiment was removed to Mullingar, in June, 1829; and in May, 1830, the head-quarters proceeded to Kilkenny, with parties at Carlow, Athy, Maryborough, and Wexford. [Sidenote: 1831] [Sidenote: 1832] In September, 1831, the regiment marched for Dublin, where it embarked for England in October, and landing at Liverpool, afterwards proceeded to Weedon. In 1832 it was removed to Chatham. [Sidenote: 1833]