On 10 June 1944, during Operation Overlord, aircraft of the Royal Air Force attacked the headquarters of Panzergruppe West in the château at La Caine, about 12 mi (19 km) to the south-west of the city of Caen, north of Thury-Harcourt. Squadrons of B-25 Mitchell medium bombers and Typhoon fighter-bombers of the RAF Second Tactical Air Force attacked the château and its grounds with bombs and air-to-ground rockets. Eighteen staff officers were killed in the attack and the commander, General der Panzertruppen Leo Geyr von Schweppenburg was wounded. A German armoured counter-offensive by Panzergruppe West against the Allied beachhead was postponed and then cancelled after the destruction of the headquarters. Command of Panzer divisions in the area was transferred to the I SS Panzer Corps headquarters; the remnants of the Panzergruppe West HQ was withdrawn to Paris and did not return to action until 28 June.
Background
Panzergruppe West Generalfeldmarschall (Field Marshal) Gerd von Rundstedt, Oberbefehlshaber West (OB West the commander of German forces in western Europe) established Panzergruppe West, (commanded by General der Panzertruppe Leo Geyr von Schweppenburg from 19 November 1943 to 4 July 1944) as a headquarters for the administration and training of the seven Panzer divisions based in northern France and Belgium. The organisation was also to command the Panzer divisions as a strategic reserve during the anticipated Allied invasion from Britain. On 9 June 1944, three days after the beginning of Operation Overlord, the invasion of France by the Western Allies, Generalfeldmarschall Erwin Rommel, commander of Heeresgruppe B (Army Group B) with responsibility for the defence of northern France, drove to the HQ of Panzergruppe West and gave orders for a counter-offensive against the Allied landings in Normandy.
Allied signals intelligence The Government Code and Cypher School (GC&CS) code-breaking organisation at Bletchley Park read German radio signals encrypted by the Enigma cypher machine and was part of the system of wireless listening posts, traffic analysis and direction finding used against Germany during the war. Ultra decrypts on 11 and 18 March 1944 established the existence of Panzergruppe West and that its headquarters was in Paris. A big increase in wireless traffic from Panzergruppe West was detected by the British Monitoring Section on 8 June 1944, when the 17th SS Panzergrenadier Division came under the command of the Panzergruppe. The site of the source was identified by High-frequency direction finding (huff-duff) as the château in the commune of La Caine, about 12 mi (19 km) to the south-west of the city of Caen. The information was forwarded to Supreme Headquarters Allied Expeditionary Force (SHAEF) and other headquarters in Normandy. Panzergruppe West had taken up residence at the château and left its vehicles in the orchard with no other camouflage. The presence of four large wireless trucks, office caravans and tents was confirmed by reconnaissance aircraft.
Prelude
2nd TAF Early on 10 June, the RAF Second Tactical Air Force (2nd TAF) was ordered immediately to attack the château with every available aircraft. Four squadrons of Typhoon fighter-bombers were ordered to readiness; three of 124 Wing at RAF Hurn in Dorset (181 Squadron, 182 Squadron, 247 Squadron) and one of 121 Wing at RAF Holmsley South, Hampshire (245 Squadron). 139 Wing at RAF Dunsfold, comprising 98 Squadron, 180 Squadron and 320 (Netherlands) Squadron with 226 Squadron of 137 Wing at RAF Hartford Bridge flying B-25 Mitchell medium bombers were alerted. A maximum effort consisted of ten Typhoons per squadron and eighteen Mitchells from each medium bomber squadron. The Typhoons were loaded with eight 60-lb RP-3 rockets each and the Mitchells were to carry their maximum bomb loads of eight 500 lb (230 kg) bombs; four squadrons of Spitfires were to escort the bombers. The rocket-firing Typhoons were to attack at low altitude and the Mitchells to bomb at medium altitude.
Preparations
The morning of 10 June was overcast and cloudy; the 10:30 a.m. briefing for a raid planned at 2:00 p.m. was postponed until the cloud cover diminished. Wing Commander Lynn, the Wing Commander (Flying), was to lead the Mitchells with 180 Squadron flying at the head of the formation. The weather was still not ideal and the first aircraft of each bomber squadron would have Gee-H navigation equipment, as a precaution against cloud over the target. While waiting on the weather, the Typhoons of 124 Wing flew two raids on gun emplacements near Caen. The eighteen Mitchells of 180 Squadron took off in three flights of six at 8:00 p.m. followed by seventeen Mitchells of 320 (Netherlands) Squadron (Commander H. V. B. Burgerhout). At 8:10 p.m. sixteen more bombers from 98 Squadron (Squadron Leader Eager) took off, the three squadrons circling while gaining height and getting into formation, then setting course for France at 8:20 p.m. Over Selsey Bill eighteen more Mitchells of 226 Squadron (Wing Commander A. D. Mitchell) joined the formation. The 33 Spitfire Mk Vs of Air Defence of Great Britain for close escort and the high and low cover of three Spitfire Mk IX squadrons from 84 Group 2nd TAF arrived soon afterwards. A Mitchell from 226 Squadron and two from 180 Squadron turned back with mechanical problems before the attack.. The spare aircraft from two of the four Typhoon squadrons had joined in, giving 42 Typhoons, eight of which operated as fighters without rockets. The Typhoons were to attack in two waves, thirty minutes apart, the first wave to attack the motor transport around the château, synchronised with the bombing by the Mitchells and the second wave to attack anything left.
Attack
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