Special Interrogation Group

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The Special Interrogation Group (SIG) was a unit of the British Army during World War II. It was composed of German-speaking Jewish volunteers from the British Mandate of Palestine. The unit executed commando and sabotage operations against Axis forces during the Western Desert Campaign.


The inspiration for the Special Interrogation Group belonged to Captain Herbert Cecil Buck of the Scots Guards, an Oxford scholar and German linguist.[1] He had been captured in January 1942, but had soon managed to break free and had then escaped back across Libya to Egypt, partly using German uniforms and vehicles. He was surprised by the ease of his deception and felt that, with greater planning and preparation, the concept could be used more offensively, to assist raiding parties attack key targets behind enemy lines. His plan was approved and, in March 1942, he was appointed the commander of this new unit, the SIG.

In March 1942, Colonel Terence Airey of military intelligence research at the War Office in London wrote that "a Special German Group as a sub-unit of M.E. Commando ... with the cover name 'Special Interrogation Group', to be used for infiltration behind the German lines in the Western Desert, under 8th Army. The strength of the Special Group would be approximately that of a platoon. The personnel are fluent German linguists, mainly Palestinian Jews of German origin. Many of them have had war experience with 51 Commando."[2]

Some personnel was also recruited directly from the Palmach, Haganah and the Irgun. Other recruits came from the Czechoslovak 11th Infantry Battalion, the French Foreign Legion and German-speaking Jewish troops. The SIG was a part of D Squadron, First Special Service Regiment. Its strength varied between 20 and 28, according to various sources.[2]


According to ex-SIG member Maurice Tiefenbrunner, their first training base was located at Geneifa near Suez.[3] The SIG were trained in desert navigation, unarmed combat, handling of German weapons and explosives. They were given fake German identities and were taught German marching songs and current German slang. For their missions, they were supplied with German pay books, cigarettes, chocolates, and even love letters from fictitious sweethearts in Germany.

Walter Essner and Herbert Brockmann, two non-Jewish Germans, had been conscripted from a POW camp to train the SIG. Before the war, both had been members of the French Foreign Legion who had been captured in November 1941 serving in the 361st Regiment of the Afrika Korps and were subsequently recruited by the British Combined Services Detailed Interrogation Centre as double agents.

Operations and betrayal[edit]

The SIG drove captured German vehicles behind German lines near Bardia, set up roadblocks and carried out acts of sabotage. Dressed as German military police, they stopped and questioned German transports, gathering important military intelligence.

On 3 June 1942, the SIG was assigned its first assault mission: They were to assist the Special Air Service, led by Lieutenant Colonel David Stirling in destroying Luftwaffe airfields which were threatening the Malta Convoys. These airfields were located 100 miles (160 km) west of Tobruk at Derna and Martuba in the Italian colony of Libya.

During the raid, on the night of 13–14 June,[4] Herbert Brockmann managed to run away by faking an engine problem of the truck he was driving, and betrayed the Derna party, nearly all of whom were subsequently killed or captured. Essner, closely guarded by Tiefenbrunner throughout the raid, was handed over to the military police and later "shot while trying to escape."[5]


On 13–14 September 1942, the SIG participated in Operation Agreement, the raid on Tobruk. Its objective was to destroy the Afrika Korps' vital supply port. The SIG were to play the role of German guards transporting three truckloads of British POWs to a camp at Tobruk. The assault failed and the British forces lost three ships and several hundred soldiers and Marines. Surviving SIG members were transferred to the Pioneer Corps.

See also[edit]


  1. ^ Bierman & Smith 2002, p. 139.
  2. ^ a b Sadler 2016, p. 32.
  3. ^ Sugarman 2000, p. 287.
  4. ^ Sugarman 2000, pp. 290–293.
  5. ^ Sugarman 2000, p. 294.


  • Bierman, J.; Smith, C. (2002). The Battle of Alamein: Turning Point, World War II. New York: Viking. ISBN 9780670030408.
  • Gilbert, M. (2001). The Jews in the Twentieth Century: An Illustrated History. New York: Schocken. ISBN 9780805241907.
  • Lewis, D. (2017). SAS Ghost Patrol: The Ultra-Secret Unit That Posed As Nazi Stormtroopers. New York: Hachette. ISBN 9781786483133.
  • Sadler, J. (2016). Operation Agreement: Jewish Commandos and the Raid on Tobruk. London: Bloomsbury. ISBN 9781472814890.
  • Sugarman, M. (2000). "The SIG: behind the lines with Jewish commandos". Jewish Hist. Studies. 35: 287–307. JSTOR 29779991.

External links[edit]