Operation Garlic

Operation Garlic was two attacks on the Dortmund-Ems Canal by 617 Squadron carried out on 14-16 September 1943. The operation was unsuccessful. The canal was not significantly damaged by the attack, while 617 Squadron lost six of the nine aircraft and crews involved in the operation.

Operation Garlic
Part of Second World War

The Dortmund-Ems Canal in 2014
Date14-16 September 1943
Location
Dortmund-Ems Canal
52°02′27.6″N 7°40′44.5″E
Belligerents
United Kingdom United Kingdom Nazi Germany Germany
Commanders and leaders
United Kingdom Wg-Cdr G W Holden Nazi Germany N/A
Strength
8 Lancasters, 6 Mosquitos on each raid Flak Gun defences
Casualties and losses
6 aircraft destroyed Little to no damage

Concept

The Dortmund-Ems Canal was a significant industrial highway, making it a suitable target. It was believed that if several 12,000lb bombs were dropped on the aqueduct at low level then it could be breached. The large bombs used had a poor aerodynamic design. To deliver them accurately they had to be dropped from a low level. For this reason, 617 Squadron was assigned the job of destroying the canal.[1]

Raid

The raid was undertaken by eight Avro Lancaster aircraft of 617 Squadron supported by six de Havilland Mosquito aircraft from 418 and 605 Squadrons. The raid was scheduled for the night of 14/15 September; however, the aircraft were recalled whilst over the North Sea due to fog and mist over the target. Whilst returning, Squadron Leader (S/Ldr) Maltby's aircraft hit the sea, possibly after colliding with a Mosquito which was returning from a different raid, and all the crew were killed.[2] Flight Lieutenant (F/Lt) Shannon and his crew circled the wreckage site for two hours waiting for rescue. Maltby's body was the only one recovered.[3]

The attack was re-launched on the night of the 15/16, with the same Lancasters involved, except that F/Lt Martin took the place of Maltby. The point of attack was nearby to Munster where the canal divided into two branches. The attacking force was split into two groups with three Mosquitos for each four Lancasters plus an additional two reserve Lancasters, the main purpose of the Mosquitos being to defend the Lancasters from flak. The visibility on the raid was reported to be very bad, preventing accurate location of the target.

CommanderReturned?Notes
Wg-Cdr HoldenNoRaid leader. Shot down by flak.
S/Ldr MaltbyNoDeputy Force leader. Crashed on the first attack whilst returning.
F/Lt KnightNoAircraft was damaged due to hitting a tree. Was able to allow his crew to bail out; however, Knight was unable to land the aircraft and was killed.
F/Lt WilsonNoRequested permission to attack; however, nothing further was heard from the aircraft.
F/Lt AllsebrookNoDropped load of bombs; however, contact could not be made shortly after.
P/O DivallNoHeard over the R/T, dropped his bomb, then crashed.
F/Lt ShannonYesShannon dropped his bomb, which exploded over the Tow Path on the east bank.
F/Lt MartinYesBombed close to the canal. Took command over remaining aircraft after the rest went down.
P/O RiceYesCould not identify the canal area due to poor visibility so returned.

All Mosquitos returned safely.[1]

Aftermath

The canal was eventually breached the following year. On the night of the 23/24 September 1944 aircraft of 617 Squadron attacked the canal using the more effective 12,000 lb Tallboy bomb, which had a seismic effect that breached the canal. It remained out of service for the rest of the war.

References
  1. "Dortmund - The Dambusters". www.dambusters.org.uk. Archived from the original on 2018-06-13. Retrieved 2018-04-02.
  2. "Record for Lancaster JA981". lostaircraft.com. Archived from the original on 24 February 2015.
  3. "Last flight". www.breakingthedams.com.
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