[1] The mission involved Royal Air Force Handley Page Halifax bombers towing Airspeed Horsa gliders 3,200 miles (5,100 km) from England to Tunisia.
The British Horsas were needed to complement the smaller American Waco gliders, which did not have the capacity required for the operations planned by the 1st Airborne Division.
[3] In January 1943 the Prime Minister, Winston Churchill, and the President of the United States, Franklin Delano Roosevelt, met at the Casablanca conference and settled the debate: the island of Sicily would be the Allies' next objective.
The British Eighth Army, under the command of General Bernard Montgomery, would land on the south-eastern corner of the island and advance north to the port of Syracuse, while the US Seventh Army, commanded by General George Patton, would land on the south coast and move towards the port of Palermo on the western corner of the island.
[7] The plan for Operation Ladbroke involved a coup de main assault on the Ponte Grande Bridge by the 2nd Battalion, South Staffordshire Regiment.
In the end it was decided that as a priority ten bomber crews would be fully trained to deliver around fifteen gliders to North Africa by 21 June.
Once on the ground each Horsa was fitted with the spare landing gear it carried inside,[11] and the flight immediately took off again on the next leg of the journey, to Mascara in Algeria.
[13] During the flight from England, for its first three hours over the Bay of Biscay the Halifax–Horsa combination was escorted by RAF Bristol Beaufighters or Mosquito long-range fighter aircraft.
[14] After surviving attacks from Luftwaffe fighter patrols and experiencing often-turbulent weather, a total of twenty-seven Horsas were delivered to North Africa in time for the invasion of Sicily.
[17] Fifty-nine of the remaining gliders missed their landing zones, by as much as 25 miles (40 km); others either failed to release and returned to Tunisia or were shot down.
The objective was captured following a simultaneous assault from both ends;[18] the platoon then dismantled demolition charges that had been fitted to the bridge, and dug in to wait for reinforcement or relief.
Three of the other Horsas carrying the South Staffordshire Regiment coup-de-main party had landed within 2 miles (3.2 km) of the bridge, their occupants eventually finding their way to the site.
[20][21] Following behind the parachute force were the glider-towing aircraft, comprising twelve Albemarles and seven Halifaxes, towing eleven Horsa and eight Waco gliders.