The high-stakes gamble to secure the eastern flank of Normandy
In short: In the dark hours of June 1944, a single British division faced a chaotic drop into enemy territory. Tasked with seizing vital bridges and destroying heavy artillery, their success depended on precision, intense rehearsal, and a desperate fight to hold the line against German counter-attacks.
Operation Tonga was the airborne component of the D-Day landings, executed by the British 6th Airborne Division between 5 and 7 June 1944. Commanded by Major-General Richard Nelson Gale, the division's mission was to secure the eastern flank of the invasion area near Caen. Key objectives included capturing two strategic bridges over the Caen Canal and Orne River, destroying several bridges over the River Dives, and neutralizing the Merville Gun Battery—a heavily fortified position that threatened the British Sword Beach landings.
The operation was fraught with technical difficulties. Bad weather and poor pilot navigation caused many troops to be dropped inaccurately, significantly complicating the mission. The 9th Parachute Battalion, specifically tasked with the Merville battery, had to attack with only a fraction of its intended strength, resulting in heavy casualties. Despite this, the battery was successfully disabled, and the division achieved its primary objectives, including a successful coup de main operation by the 2nd Battalion Oxfordshire and Buckinghamshire Light Infantry to secure the canal and river bridges.
Success was not left to chance; the division underwent rigorous, specialized training. This included large-scale exercises like 'Bizz II' in March 1944, which utilized 284 aircraft, and 'Exercise Mush' in April, which used approximately 700 aircraft. Glider pilots practiced night maneuvers and low-altitude approaches, while infantry rehearsed the assault on a replica of the Merville battery. This intensive preparation allowed units like Major John Howard’s force to maintain a high tempo of operations, enabling them to seize the bridges and hold a bridgehead until Allied ground forces could link up.
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Sources
- Summary by Intellect · source: Operation Tonga
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