On 1 Jan 1800, England, Yarmouth. 49th returned here where they started an intensive recruiting campaign, also deploying to Bungay in Suffolk and, in April, to Colchester.
In June it transferred to Hillsea Barracks near Portsmouth.
In July it arrived in Jersey
During 1801, Ireland, Fermoy. The Regiment now stationed here. With limited European service, volunteered to extend its services to Egypt, and received the approbation of his Royal Highness the Commander in Chief
On 12 Feb 1801, England, Portsmouth. 49th arrived back in England, after one transport had been wrecked off Guernsey. Apparently no lives were lost.
During February the 49th was again ordered for foreign service and joined the Fleet assembled at Spithead. The object to break the combined Naval powers of Russia, Sweden, Denmark and Prussia
On 2 Mar 1801, England. The Fleet was under Admiral Parker with Nelson as Second in Command. The troops were distributed amongst the ships in small parties of approximately thirty and ordered to do duty as marines, which improved their conditions and entitled them to prize money. The Fleet sailed for Yarmouth
On 12 Mar 1801, England, Yarmouth. The Fleet sailed for the Baltic.
On 20 March the Fleet anchored off-shore. Diplomatic negotiations tried to detach Denmark from armed Neutrality but failed.
On 30 March the Fleet passed up the sound five miles north of Copenhagen, remaining out of gun range. It was mostly a naval battle so the 49th of necessity played a somewhat passive part. They still suffered 13 killed and 41 wounded.
In commemoration of its services the 49th received the Battle Honour 'Copenhagen', and its band was permitted to play Rule Britannia after the Regimental March.
In 1847 the survivors received the Naval General Service Medal. In 1951 permission was given to place a Naval Crown on the Colours
During July 1801, England, Portsmouth. The Fleet with most of the 49th reached Portsmouth during July, continuing to arrive during August.
On 1 September the whole of the 49th Regiment deployed to Colchester, Essex.
On 1 June 1802, England, Chelmsford. In April the 49th Regiment was at Norman Cross Barracks and, during that month, was warned for service in Canada.
On 1 June the 49th deployed to Chelmsford and, on 6 June, embarked for Canada at Tilbury
On 23 Aug 1802, Canada, Quebec. 1st Division including the 49th disembarked at Quebec.
It was deployed at Montreal during October and remained there until July 1803 when it deployed to Toronto, on Lake Ontario.
During 1803, Ireland, Dublin. The 62nd now deployed here assisted in quelling insurrection that took place and received the thanks of the Commander in Chief for its conduct. It spent a short time during the year at each of; Fullamore, Kilbeggan and Ballinasloe
During Oct 1803, Canada, Fort George. A wing of the 49th Regiment deployed here on the Niagara River border with the USA. Americans continually tried to coax troops to cross the border, and there were frequent desertions from all Regiments