The 11th Parachute Battalion was an airborne infantry battalion of the Parachute Regiment, raised by the British Army in World War II. The battalion was formed in the Middle East and was assigned to the 4th Parachute Brigade, 1st Airborne Division. As it was still training it was left behind when the rest of the brigade took part in the invasion of Italy. One company later parachuted onto the island of Kos taking prisoner the large Italian garrison. The battalion rejoined the rest of the 1st Airborne Division, then in England. The only battle in which the battalion participated was the Battle of Arnhem, part of Operation Market Garden, in September 1944. The battalion sustained very heavy casualties and was disbanded following the battle and the men were used as replacements elsewhere.