Later on in the year of 1809 the regiment saw action in the Army of La Mancha under General Juan Carlos de Aréizaga, in General Juan de Bermuy's 1st Cavalry Division, at the Battle of Ocaña. The battle was a disaster for the Spanish Army as large numbers of the well trained pre-1808 veterans had been killed or captured, leaving the army with a great need for more trained men; the defeat also leading to the second Spanish attempt to re-capture Madrid being halted.