In the Battle of Villagarcia on 11 April 1812, British cavalry commanded by Lieutenant-General Sir Stapleton Cotton routed a French cavalry force led by Général de Brigade Charles Lallemand at the village of Villagarcia in the Peninsular War. Cotton intended to trap the French cavalry, which was separated by a number of miles from the main body of the French army, by executing simultaneous frontal and flank attacks. The plan came close to disaster when the forces making the frontal assault pushed forward prematurely. The situation was saved by the timely arrival of John Le Marchant's force on the French left flank.

The 12th Royal Lancers was a cavalry regiment of the British Army first formed in 1715. It saw service for three centuries, including the First World War and the Second World War. The regiment survived the immediate post-war reduction in forces, but was slated for reduction in the 1957 Defence White Paper, and was amalgamated with the 9th Queen's Royal Lancers to form the 9th/12th Royal Lancers in 1960.