In May 1811, the 1st Battalion took part in the Battle of Fuentes de Onoro which ended in yet another British victory and gained the regiment its seventh battle honour. The following year, in January, the 1st Battalion took part in the Siege of Ciudad Rodrigo. The fortress of Ciudad Rodrigo was one of the two important French held fortresses (the other being Badajoz) and the siege of Ciudad Rodrigo began on 8 January. Despite their more privileged nature as an elite force in comparison to the normal infantry, the Guards still helped in the digging of trenches, an arduous duty made especially more by the absolutely terrible weather. When the assault on Ciudad Rodrigo finally happened on 19 January 1812 it was bloody, with fierce and chaotic hand-to-hand fighting taking place at the two breaches made in the walls of the fortress. The casualties were heavy for the British, with over 500 being killed, wounded or missing during the assault and over 1,000 casualties in total for the siege, though despite this, the British took Ciudad Rodrigo.