Regimental history of the Welch Regiment - one of the proudest and oldest formations in the British Army - is divided into two parts. The first section details the history of the Regiment from its origins as the Regiment of Invalids which became the 41st Regiment of Foot in the 18th century, down to the outbreak of the Great War in 1914. It details its service in the West Indies during the seven Years' War; action on Corsica and Toulon in the French Revolutionary War and its duties as a Marine Regiment serving in some of the greatest sea battles of the age, including the Glorious First of June; the Battle of the Saints and the Battle of St Vincent with Admirals Nelson and Jervis. In the 19th century, the Welch served in India; against America in the War of 1812; the Waterloo campaign; the Afghan wars and the Crimean and Boer Wars.