About Jock Lewes
Lived 1913 – 1941 (aged 28). Jock Lewes was a British inventor and military personnel.
Lieutenant John Steel "Jock" Lewes (21 December 1913 – 30 December 1941) was a British Army officer who served in World War II. He was the founding principal training officer of the Special Air Service (SAS). The SAS's founding commander, David Stirling, said later of Lewes, "Jock could far more genuinely claim to be founder of the SAS than I." Lewes also invented an explosive device for use by the SAS, the eponymous Lewes bomb.
Early life, family and education
Lewes was born in Calcutta to a British father, chartered accountant Arthur Harold Lewes, and an Australian mother, Elsie Steel Lewes. The family moved to Australia and Lewes grew up at Bowral, New South Wales. As a teenager he attended The King's School, Parramatta. and ending a 15-year winning streak by Cambridge. Lewes travelled to Berlin to work for the British Council and,
A younger brother, David Steel Lewes, was later prominent as a cardiologist in the United Kingdom and was a Royal Air Force medical officer during the war.
Military career Early career Lewes was first commissioned to the British Army's General List as a university candidate on 5 July 1935, while a student at Oxford. At the outbreak of the Second World War, he was briefly transferred to a Territorial Army unit, the 1st Battalion, Tower Hamlets Rifles, Rifle Brigade on 2 September 1939 before joining the Welsh Guards on 28 October.
SAS In 1941, Lewes was in a group of volunteers assembled by David Stirling to form a unit dedicated to raiding missions against the lines of communication of Axis forces in North Africa. For military deception and counterespionage purposes, this platoon-sized group was at first officially known as "L" Detachment, Special Air Service Brigade. To destroy Axis vehicles, members of the SAS surreptitiously attached small explosive charges. Lewes noticed the respective weaknesses of conventional blast and incendiaries, as well as their failure to destroy vehicles in some cases. He improvised a new, combined charge out of plastic explosive, diesel and thermite. The Lewes bomb was used throughout the Second World War. Lewes was reportedly hit in the thigh by a 20 mm cannon round and died at the scene of the attack.
Recognition Lewes is commemorated on the Alamein Memorial.
In popular culture Lewes was depicted by Alfie Allen in the 2022 television historical drama SAS: Rogue Heroes.
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Important facts
People in Jock Lewes's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Jock Lewes's
Frequently asked questions
Who was Jock Lewes?
British Army officer (1913-1941)
When was Jock Lewes born?
Jock Lewes was born on 21 December 1913 in Kolkata.
When did Jock Lewes die?
Jock Lewes died on 31 December 1941 in Libya.
What was Jock Lewes's occupation?
Jock Lewes was an inventor and military personnel.
What nationality was Jock Lewes?
Jock Lewes was British.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Jock Lewes. https://biography.guide/jock-lewes/
MLA: "Jock Lewes." Biography.guide, https://biography.guide/jock-lewes/.
Chicago: "Jock Lewes." Biography.guide. https://biography.guide/jock-lewes/.
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