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Operation Chess was a British Commando raid during the Second World War. It was carried out by 17 men of No. 12 Commando commanded by a Second Lieutenant Pinckney over the night of 27/28 July 1941.

The target for the raid was Ambleteuse, Pas-de-Calais, France. The raiding party were towed across the English Channel in two Landing Craft by a Motor Launch. Which cast them off two miles from the Slack River near Ambleteuse. They remained ashore for one hour, no prisoners were taken.[1]

Cdr. Sir Geoffrey Congreve Bt DSO died of his wounds received during the raid.[2]


  1. "Naval codewords: Pas-de-Calais". Naval History. Retrieved 9 June 2010. 
  2. The Times:In memoriam - War, Saturday 27th July 2013

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