It was January 1944, and the mood in London was somber, as chilling as the cold January air that permeated the damp, dark cells of the Gestapo-held prison in Amiens. Among those incarcerated behind the 3-ft thick, towering prison walls were several hundred members of the French Resistance, all condemned to death for their role in assisitng the Allies. Some had been betrayed, some had already been shot and the future of the others, including two Allied intelligence officers, looked bleak.

London has now received information that more executions were set to be carried out at dawn on Saturday 19 February. The prisoners needed help, and fast, before the entire Resistance movement in northern France, whose involvement was crucial to Allied plans for the forthcoming invasion, was finished.

What followed was one of the most daring low-level bombing operations of World War II; codenamed ‘Operation Jericho’, it would involve a force of 19 de Havilland Mosquito’s. Led by Wing Commander ‘Black’ Smith, the Mosquitoes of 487 Sqn RNZAF would first breach the 20-ft high outer wall, followed closely by 464 Sqn RAAF – led by Wing Commander Bob Iredale – whose task was to hit the main building and demolish the guards’ quarters in the hope that the cell doors would be sprung open, allowing the prisoners to make a dash to freedom. The operation, under the command of Group Captain ‘Pick’ Pickard, required precision flying of the highest order.

If the task ahead wasn’t difficult enough, on the morning of Friday 18 February snow was falling from murky skies as the Mosquitoes left RAF Hunsdon and headed south towards Amiens to liaise with their Typhoon escort en-route.

Gerald Coulson’s powerful painting depicts the moment when Group Captain Pickard, the last over the prison, departs the scene just as the first time-delay bombs begin to explode. Within seconds the walls will be breached, the barracks destroyed and the cell doors flung open as planned, allowing the prisoners to clamber through the debris into the surrounding fields. More than 150 men will escape to re-join the Resistance. However Group Captain Pickard, one of the RAF’s most decorated and highly regarded pilots, did not survive the mission.