Operation Jericho – Mosquito Attack on Amiens Prison – 18th February 1944

This month marks the 80th anniversary of Operation Jericho, a daring low-level raid involving nineteen Mosquitos of No. 140 Wing of the RAF 2nd Tactical Air Force, to free members of the French resistance and Allied intelligence officers being held in Amiens prison in northern France.

PRU photo
Amiens Prison during the raid – picture taken from the accompanying PRU Mosquito


In 1943 many members of the French resistance movement in the Amiens area had been caught by the Germans and imprisoned in Amiens prison. Some had been betrayed by collaborators, and the entire movement in the area was at risk. By December 1943, 12 members of the resistance had been executed at the prison, and it was learned that more than 100 other members were to be shot on 19th February 1944. Dominique Penchard, a resistance activist, began sending information about the prison to London, including accurate details of the layout, defences, and duty rosters.

When two Allied intelligence officers – with possible knowledge of the D-Day invasion plans – were also captured and sent to Amiens prison, a precision air attack on the prison was requested, and the mission was allocated to the 2nd Tactical Air Force. The prison was located alongside a long straight road and surrounded by high walls. The guards ate in a block adjacent to the main building, making lunchtime the best time to eliminate the maximum number of guards. The balance of munitions used had to be carefully planned so that when hitting the main prison walls, they were breached and the doors sprung open without the building being destroyed. As well as destroying the guards’ mess hall, breaches had to be made in the prison’s outer walls to allow the inmates to escape. There were around 700 inmates in the prison and loss of life was inevitable during an air raid, but it was thought that many had already been condemned to death and it would give a chance for some at least to escape.

The Attack Force

No. 140 Wing of the RAF Second Tactical Air Force, based at RAF Hunsdon in Hertfordshire, was selected to carry out the raid using Mosquito FB Mk VIs. The Wing comprised 18 Mosquitos – 6 from No. 464 Squadron RAAF, 6 from No. 487 Squadron RNZAF, and 6 from No. 21 Squadron RAF, plus one aircraft of the Photographic Reconnaissance Unit (PRU), and was led by 28 year old Gp Capt Percy Charles Pickard – well known to the public at the time as the pilot of Wellington “‘F’ for Freddie” in the RAF film “Target for To-night”. Pickard was an experienced pilot and leader but was inexperienced in low level attacks and underwent 10 hours’ conversion training at Hatfield prior to the raid.

487 Sqn FBVIs
Three Mosquito FB Mark VIs of No. 487 Squadron RNZAF based at Hunsdon, Hertfordshire, flying in tight starboard echelon formation, with 500-lb MC bombs on underwing carriers

The Mosquitos of 487 Squadron were assigned the task of bombing the prison guards’ mess hall and breaching the outer prison wall in two places, while 464 Squadron’s aircraft were tasked with bombing the prison’s main walls if no prisoners were seen escaping. No. 21 Squadron was assigned with the grim alternative of bombing the prison and all in it, as requested by those prisoners aware of the proposed mission, should the initial bombing runs fail. The overall raid was to be led by Air Vice-Marshal Basil Embry, and was ready to go from 10th February. Close support was to be provided by Hawker Typhoons from No. 198 Squadron RAF and No. 174 Squadron RAF.

Armourers hand-winch a 500-lb MC bomb to the wing loading-point on Mosquito FB Mark VI, MM403 ‘SB-V’, of No. 464 Squadron RAAF at Hunsdon, Hertfordshire

The Raid

Although Air Vice Marshall Basil Embry was originally intended to command the attack, he was scrubbed from the mission, as he was involved in the planning of the invasion of Europe. Pickard therefore took his place, despite his limited experience of low-level attack. The mission was delayed by very poor weather, which worsened after 10th February, with low cloud and snow across Europe. By 18th February it was not possible to wait any longer for the weather to improve, and the 18 Mosquitos, plus a PR (photo-reconnaissance) Mosquito, were readied. The crews were briefed at 08:00 under high security, the first time they had been made aware of the target. Pickard was to bring up the rear of the second wave of aircraft, to assess the damage and to call in 21 Squadron if necessary. In the event of anything happening to Pickard’s aircraft, the crew of the PR Mosquito would carry out the task instead.

The final decision to carry out the attack was made just two hours before the deadline for striking the target, and the Mosquitos took off from Hunsdon into weather worse than many of the crews had previously experienced. Four Mosquitos lost contact with the formation during the flight and had to return to base, and an additional one had to turn back due to engine problems, leaving nine to carry out the main attack with four in reserve.

The attack group approached Amiens from the east, using the very straight Albert-Amiens road as a guide. At 1203 hours three Mosquitos of No 487 Squadron attacked the eastern wall on a heading of 250 degrees, just clearing the wall with twelve bombs fitted with 11 second delay fuses, while two made a diversion attack on the local railway station before returning to the prison. The leader’s bombs were seen to hit the wall five feet from the ground, while other bursts were seen adjacent to the west wall and to overshoot into fields to the north. Two aircraft of No 487 Squadron attacked the northern wall at 1203 hours just clearing the wall on a heading of 150 degrees with twelve bombs. These attacks were directed at places later reported breached by reconnaissance aircraft. One bomb was seen to hit the large building, and the northern side of the eastern building was also reported hit.

487 over Amiens
Mosquitos of No. 487 Squadron RNZAF clear the target at low level as the first 500-lb bombs to be dropped detonate near the south wall of the prison

Two Mosquitos of No 464 Squadron bombed the eastern wall at 1206 hours from 50 feet (15m) heading 150 degrees and 250 degrees with eight 500lb bombs. The wall appeared unbreached by the first pass, and results of this second pass were unobserved.

Two further 464 Squadron Mosquitos bombed the main building at 1206 hours from 100 feet (30m) heading 150 and 250 degrees with eight 500lb bombs. The north wall appeared to be already damaged. One of these aircraft was seen to bomb and did not return. A direct hit on the guardhouse killed or disabled the occupants and a number of prisoners were killed or wounded, while many were able to escape

The PRU Mosquito circled the target three times between 1203 and 1210 hours from 400 to 500 feet (120-150m) using a cine film camera but carrying no bombs. He reported a large breach in the eastern centre of the north wall and considerable damage to the extension building to the west of the main building as well as damage to the western end of the main building. A number of men were seen in the courtyard near the separate building which appeared to be workshops and three men were also seen running into fields from a large breach in the northern wall.

A Personal Account

Among the 700 inmates was Raymond Vivant, the sub-prefect of Abbeville who had been arrested by the Gestapo on 12th February on suspicion of Resistance activities. On the morning of 18th February, Vivant was preparing for his lunch when he heard the drone of aircraft engines followed by a loud explosion:

“I thought initially that a German plane had just crashed very close to us, and I began to delight in this when a succession of explosions resounded. Out of instinct, I leaned myself against an angle of my cell, while the panes of the fanlight flew in fragments. I saw the wall on the left side split open abruptly and a cloud (of) dust invaded my cell. I remained motionless, awaiting the end of the explosions, believing that an aerial combat had taken place above our heads. “Some planes have crashed with their bombloads,” I thought. But, as soon as the cloud of dust dissipated, I saw that the door was torn from its hinges. The long corridor which served my cell, on both floors of the prison, an immense heap of stones, had been replaced by a cluster of smoking debris! On the right-hand side, the other part of the prison appeared intact. But, to the left, with inexpressible joy, I saw the countryside, covered with snow, extending to infinity, A large breach had been opened in the high surrounding wall…”

Needless to say, Vivant ran for his life and was one of the 258 prisoners who escaped.

Pickard shot down

The 12 foot wide breach in the south side of the prison’s outer wall

Pickard, circling at 500 ft (150 m), saw prisoners escaping and signalled No. 21 Squadron’s Mosquitos to return home. As he turned for home, he was set upon by an Fw 190 fighter flown by Feldwebel Wilhelm Mayer of 7/JG 26. During the ensuing chase the Fw 190 severed the tail of Pickard’s Mosquito causing the aircraft to immediately flip over and crash into a field. Both Gp Capt Pickard and his navigator, Flt Lt J A Broadley were killed. They are both buried in St. Pierre Cemetery near Amiens.

One other Mosquito – MM404 SB-T of No 464 Sqn – was lost during the mission. After attacking the target, it was seen at Freneuville at 1210 hours at 50 feet (15m) leading its formation. It attacked a gun position and shortly afterwards dropped to starboard of the formation and was not seen again. It appears that shortly after leaving the target area, MM404 was hit in the cockpit by flak. Navigator Flt Lt R W Sampson was killed outright. The pilot, Sqn Ldr A I McRitchie, was wounded and did a high-speed belly landing in a snow-covered field near Freneuville, near Dieppe, to be taken prisoner. Flt Lt Sampson was buried at Poix-de-la-Somme, 25km SW of Amiens. One aircraft of No 487 Squadron was hit by light flak near Albert, having its starboard nacelle holed and its starboard wheel collapsed on landing. One damaged aircraft of No 21 Squadron landed at Ford. One aircraft of No 487 Squadron abandoned the mission south of Oisemont, the pilot being slightly wounded and the aircraft damaged.

There were 700 prisoners detained at the time of the attack and of this number 102 were killed, 74 wounded and 258 escaped. Among those who escaped were important members of the Resistance movement. It is unclear whether the Allied intelligence officers escaped. Of those who escaped, 182 were recaptured. The diversionary attack on the railway station delayed German troops by two hours.


No article can be written on the Amiens raid without mention of the possible controversy that surrounds it. There is a school of thought that the raid was masterminded by the Secret Intelligence Service and that the RAF and the crews who flew the mission, and in some cases gave their lives, were nothing more than pawns in a political game. This theory is discussed in the book “Amiens Raid: Secrets Revealed” by Jean-Pierre Ducellier. The suggestion is that there was no mass execution planned, no British agents interned in the prison, the French resistance had no prior knowledge of the raid and that Gp Cptn Pickard did not release his bombs or that dummy bombs were used.

This article is based on the official version of events, but whatever the truth, we celebrate the brave crews that flew on that day in February 1944.

Amiens Prison wall
The prison wall as it looks today – Photographs © Gore Photography

Aircraft involved in the attack (all Mosquito FB Mk.VI)

Crews attacking the target
No 487 Squadron
‘R’ Wg Cdr Smith, DFC (Pilot) / Flt Lt Barnes, DFM (Navigator)
‘C’ Plt Off Darrall / Plt Off Stevenson
‘H’ Flt Sgt Jennings / WO Nichols
‘J’ Plt Off Fowler / WO Wilkins
‘T’ Plt Off Sparkes / Plt Off Dunlop
No 464 Squadron
‘F’ Wg Cdr Iredale, DFC / Flt Lt McCaul, DFC
‘O’ Fg Off Monghan, DFM / Fg Off Dean, DFM
‘A’ Sqn Ldr Sugden / Fg Off Bridger
‘V’ Flt Lt McPhee, DFM / Flt Lt Atkins
‘C’ Flt Lt Wickam, DFC / Plt Off Howard
No 464 Squadron
‘F’ Gp Capt P C Pickard, DSO, DFC / Flt Lt J A Broadley, DSO, DFC, DFM
‘T’ Sqn Ldr A I McRitchie / Flt Lt R W Sampson
Crews instructed not to attack the target
No 21 Squadron
‘U’ Wg Cdr Dale / Fg Off Gabites
‘O’ Flt Lt Wheeler, DFC / Fg Off Redington
‘J’ Flt Lt Benn, DFC / Fg Off Roe
‘D’ Flt Lt Taylor, DFC / Sqn Ldr Livry DFC
Abortive Sorties
No 487 Squadron
‘Q’ Flt Lt Hanafin / Plt Off Redgrave
No 21 Squadron
‘P’ Flt Lt Hogan / Flt Sgt Crowfoot
‘F’ Flt Sgt Steadman / Plt Off Reynolds

Below is a copy of the secret planning signal for the raid as sent by No 2 Group on the morning of the attack giving final details of the attack

FEBRUARY 18th, 1944
HNO T 140 A/F
V GPB GPB 5/18 ‘O’ FORM ‘B’

FROM 2 GROUP 180940A

AO,241 18th Feb.
Information: Mosquitos of 140 Airfield are to attack the prison at AMIENS in an attempt to assist 120 prisoners to escape. These prisoners are French patriots condemned to death for assisting the Allies. This air attack is only part of the plan as other assistance will be at hand at the time.
Date and Time: 18th February, 1944.
Zero 1200 hours.
Route: Base – LITTLEHAMPTON – Via appropriate lattice to TOCQUEVILLE – SENARPONT – BOURDON – One mile South DOULLENS – BOUZINCOURT – 2 miles west south west ALBERT – Target – Turn right – ST. SAVEUR – SENARPONT – TOCQUEVILLE – HASTINGS – Base.
Bomb Load: 2 x 500lb M C Mk.IV fused T.D. 11 secs.
2 x 500lb S A P fused T.D. 11 secs.
Method of Attack: All aircraft to attack at low level.
1st Attack: Six Mosquitos as detailed by O.C. 140 Airfield.
Intention: To break the outer wall in at least two places.
Method: Leading three aircraft to attack eastern wall using main road as lead in. Second section of three aircraft when ten miles from target will break away to the right at sufficient height to allow them to watch leading three aircraft and then attack northern wall on a North-South run, immediately following the explosion of the bombs of the leading section.
Timing: Attacks to be made at Zero hours.
2nd Attack: Six Mosquitos as detailed by O.C. 140 Airfield.
Intention: To bomb the main prison buildings.
Method: Leading three aircraft to attack south eastern end of main building and second section of three aircraft to attack the north western end of building. Attacks to be carried out in a similar manner to first attack above.
Timing: Attack to be made at Zero plus 3 mins.
3rd Attack: Six Mosquitos as detailed by O.C. 140 Airfield.
Intention: This force is a reserve, and will approach the target as in the previous two attacks, one section from east and one from north, but will only bomb if it is seen that one of the previous attacks has failed.
Method: As in 1st attack. Target will be decided by leader on approach.
Timing: Attack to be made at Zero plus 13 mins.
Fighter Support: Each formation of six Mosquitos will have one squadron of Typhoons as close escort. Fighters will rendezvous with Mosquitos as follows:-
1st Attack: 1 mile east of LITTLEHAMPTON at Zero minus 45 mins.
2nd Attack: 1 mile west of LITTLEHAMPTON at Zero minus 42 mins.
3rd Attack: LITTLEHAMPTON at Zero minus 32 mins.
1st Attack: Bomber call sign: D Y P E G.
Ground control call sign: A I L S O M E on 2 Group guard 1.
Bomber leader may call escort direct in emergency on 11 Group guard 1.
2nd Attack: Bomber call sign: C A N O N.
Ground control call sign: B E L L F I E L D on 2 Group guard 1.
Bomber leader may call escort direct in emergency on 11 Group guard 1.
3rd Attack: Bomber call sign: B U C K S H O T.
Ground control call sign: G R E E N S H I P on 2 Group guard 1.
Bomber leader may call escort direct in emergency on 11 Group guard 1.
Fighter call sign: D U N L O P.
General: Emergency homing to FRISTON on 2 Group guard.
A.S.R. on 2 Group guard.
Special V.H.F. codeword: RENOVATE.
Notes: (1) Following each attack sections of three aircraft of each formation are to endeavour to regain close company as soon as possible.
BT 180940A.

Raymond Vivant’s personal account from: French Resistance Fighter: France’s Secret Army By Terry Crowdy, Osprey Publishing (6 Jun 2007)

Further reading:

The Jail Busters: The Secret Story of MI6, the French Resistance & Operation Jericho by Robert Lyman, Quercus Publishing Ltd. (2014)

The Amiens Raid: Secrets Revealed by Jean-Pierre Ducellier, Red Kite Books (30 July 2011)

And The Walls Came Tumbling Down by Jack Fishman (OOP but possibly still available) Pan Books (11 Feb 1983)

The De Havilland Mosquito as a Fighter Bomber

View wartime newsreel from British Pathé:

The People’s Mosquito Ltd is not responsible for content of third party linked websites. Nor does it endorse the books mentioned in this article.

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18 thoughts on “Operation Jericho – Mosquito Attack on Amiens Prison – 18th February 1944”

  1. Danielle Nichol

    bit of an error in the text, wing commander smith was an alias for Air Vice-Marshal Basil Embry who flew as Picards number 3 position, this is stated in an interview with Picard some time after the raid and also by Embry himself, both interviews can be found on youtube

  2. Hello e’body

    Great article.
    Exact location of belly landing of MM404 is Villeroy (near Oisemont).
    Flak that hit MM404 was located at Fresneville (not Fresneuville).
    Navigator, Richard W. Sampson, buried at Poix-de-Picardie (not Poix-en-Somme).


  3. Ingrid Loyau-Kennett

    I do not know where you found your information. I am very sad to see my grand-father not mention in your paper. Flight Lieutenant navigator Basil Kennett, DFC, took part of the Operation Jericho. He is the one who volunteer to film because the last plane is always in the most dangerous position. He said he took command when Picard went missing. I have not been able to establish the veracity of this particular part of the story but my grand-father never lied about his action during the war: he simply never talked about, only answering journalists and me.

    I would appreciate an answer. Thanks.

    1. People's Mosquito

      Afternoon Ingrid,

      Firstly, apologies for the delay in replying to you regarding the article on Jericho. Thank you for reaching out to the project and highlighting the omission of your grandfather’s involvement in the famous Mosquito raid. With the 75th anniversary of Jericho fast-approaching we would be delighted to set the record straight and include your grandfather’s filming role in the raid with a fresh look at the mission.

      As you can see, the original article was written several years now, and new material is coming to light all the time. If you’re willing and able to, i’d be more than happy picking the conversation up and seeing what, if any, records you have from F/Lt Kennett’s service with 464 Squadron. Please feel free to contact e directly via stewart.charman@peoplesmosquito.org.uk.

      I look forward to hearing from you in due course.

      Kind regards,
      Stewart Charman
      Communications Director

  4. The person second left in the photograph of the bomb being hand winched is my Husband’s Uncle John Mercer who is 95 this year and living in East Ham, London.

    1. People's Mosquito

      Great to hear this Judy! Please pass the best to Uncle John from the team at ‘TPM’. If he and you wish to feature his service in our TPM Club Journal as a tribute for John and his colleagues we would be delighted to do this.

  5. just by a twist of fate, have met one of those who escaped from that prison, after two years incarceration, she is now in her ninety’s bright as a button and what a story she has

    1. People's Mosquito

      Thank you Pete if you have any pics or the lady wants to tell her story we would be very honoured?

  6. Kim Stevenson

    Team : EG – C was piloted by Pilot Officer Merv Darrall , His Navigator was as stated here. Pilot Officer Fred “Steve” Stevenson. How do I know this ? .Fred was my father Merv was my God Father.

    Cheers and regards from New Zealand

    Kim Stevenson

      1. rosalie darrall

        i am the daughter of one of the crew..merv darrall..his navigator was kim stevenson..you have spelt my dads name as powell..would love it to be altered..thankyou,cheers ro darrall

        1. People's Mosquito

          Hi Rosalie, thanks for getting in touch and bringing this to our attention. We saw your comment on Facebook earlier, and after checking with alternative source, have corrected your father’s name in our article. We apologise for the error and are glad we now have it right. The original information we had was from the RAF website which has the name down as Powell. You may wish to inform them of their error, as the RAF website is generally seen as a reliable source. Many thanks and best wishes.

          1. Kim Stevenson

            Team, I put a note on here last year about the misspelling of Merv’s name.. Disappointed it took a year to correct … These two guys never received any recognition of any sort for what they did and yet their accuracy of their bombs in that raid was outstanding …. Both did not live to see all the publications and celebration that exists today. Some of us have worked hard to get some sort of recognition .. Names are important …. Cheers

          2. People's Mosquito

            Thanks for getting in touch again Kim. Yes, names are important and so is remembering the important role people like your father played. This is one of the driving forces behind us setting up The People’s Mosquito, and is an important part of our motto. We have apologised to you on Facebook for our error in not correcting the spelling of Pilot Officer Darrall when you pointed it out. As I suggested to Rosalie Darrall, you might want to get in touch with the RAF website where we sourced the original names (and much of the detail) for the article. They have the name (incorrectly) listed as Powell. We are happy to do the same. Thanks.

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