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.
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.
1827
The service companies, under Lieut.-Colonel Payler, landed at Lisbon, in January, 1827; they formed part of the first brigade under Major-General Sir Edward Blakeney, and advanced up the country to Coimbra. The apprehension of invasion and insurrection ceasing to exist, the regiment left Coimbra, and occupied the palace and convent at Mafra, during the winter.
1828
In March, 1828, the service companies embarked from Lisbon, for Corfu, where they landed on the 31st of that month, and were stationed at Port Raymond barracks. In December a detachment joined from the depôt in Ireland.
1829
During the summer of 1829, the regiment was removed from Corfu to Zante, with detachments at the islands of Cerigo and Paxo.