In March, 1819, the head-quarters embarked from Cephalonia, and the detachment from Zante, for Malta, where the regiment was assembled, and occupied the lower St. Elmo barracks at Valetta, under the command of Lieut.-Colonel Mathew Stewart, who was appointed from half-pay in succession to Colonel Travers, nominated an Inspecting Field-officer of Militia in the Ionian Islands. [Sidenote: 1820] During the year 1820, the regiment occupied the barracks in the Cottonera district, with detachments at Floriana, forts Manvel and Tigni, and the island of Giza. [Sidenote: 1821] From Malta, the regiment embarked, in April, 1821, for England, and landing at Portsmouth in June, was stationed at that fortress three months; it afterwards sailed to Plymouth, and occupied the citadel and Stonehouse barracks. [Sidenote: 1822] In April, 1822, the regiment embarked from Plymouth for Deptford, and after several changes of quarters it was stationed at Chatham and Sheerness. [Sidenote: 1823] On the 28th of May, 1823, the regiment embarked at Chatham, for Ireland; after landing at Cork, it proceeded to Fermoy, and in October it was removed to Rathkeale, with detachments at twelve other stations. [Sidenote: 1824] On the decease of Lieut.-General the Honorable Sir Thomas Maitland, G.C.B. and G.C.H., King George IV. conferred the colonelcy of the TENTH on Major-General Sir John Lambert, K.C.B. by commission dated the 18th of January, 1824. On the 8th January, 1824, Colonel Sir Robert Travers, was reappointed, in succession to Lieut.-Colonel Stewart, who retired from the service. [Sidenote: 1825] In April, the regiment was removed to Fermoy, and Lieut.-Colonel James Payler was appointed on the 2nd June, 1825, from the half-pay, unattached, in succession to Sir Robert Travers, promoted to the rank of Major-General. Lieut.-Colonel Payler assumed the command in June, 1825, and in September following the head-quarters were removed to Templemore. [Sidenote: 1826] From Templemore, the regiment was removed, in February, 1826, to Castlebar, where a pair of new colours, bearing a "SPHINX," with the words "EGYPT," and "PENINSULA," was presented to it by Lieut.-Colonel Payler, the commanding officer, on the 19th of May. After several changes of quarters, in the autumn of this year the regiment was formed into six service and four depôt companies, at Buttevant, from whence the service companies marched to Cork, where they embarked, in December, for Portugal, the government of which country had solicited British aid, in consequence of an apprehended insurrection, and an invasion from Spain, which threatened to oppose the introduction of a constitution conferring more liberty on the Portuguese people than they had previously possessed. [Sidenote: 1827]