A further unit, below battalion size, was formed of men separated from the two Kings German Legion light infantry battalions with Moore's army – this unit remained in service until 1811 when it was reabsorbed into the parent units which had returned to the peninsula. A detachment battalion formed from part of the 2nd Battalion Coldstream Guards and 2nd Battalion 1st Foot Guards was sent to Cadiz in 1809. It fought at the Battle of Barrosa on 5 March 1811 where, either intentionally or as a result of confusion on the battlefield, it split into its two component units and fought separately. The unit was dissolved shortly after the battle, the Foot Guards being absorbed into the recently arrived 3rd battalion and the Coldstream Guards returning to England. A detachment battalion was also used by Wellesley to garrison Gibraltar during the war.