Costas Georgiou (Greek: Κώστας Γιώργιου, also Anglicized as Kostas Giorgiou; alias "Colonel Callan") (1951 – 10 July 1976) was an ethnic Greek Cypriot, British mercenary executed in Angola following the Luanda Trial for activities during the civil war phase of the Angolan War of Independence.
British military career
Georgiou joined the British Army and served, at first with distinction, in 1st Battalion, Parachute Regiment in Northern Ireland. He was credited as being one of the best marksmen in the unit. He later became involved with other paratroopers in an armed robbery on a Post Office on 18 February 1972. Georgiou was eventually sentenced to five years in prison.
Despite later claiming to have been a colonel, Georgiou's highest British Army rank attained was that of corporal, and he never received officer training. Others state Georgiou was a private soldier.
Background: Roots of the conflict and Georgiou's recruitment
In 1975, Portugal recognised the independence of its former colony of Angola, and acknowledged the Soviet-aligned People's Movement for the Liberation of Angola (MPLA) as the de jure government. The new government sought and received help in the form of Cuban military advisors, combat troops and material to fight against rival factions, which included the US-backed National Liberation Front of Angola (FNLA) and the South African-backed National Union for the Total Independence of Angola (UNITA), which received some US funding but no actual military aid. At the same time, British and American ex-military were recruited by FNLA through Private Military Companies (PMC; also known as PMIs, for Private Military Industry) in the United Kingdom and United States. Funding was provided by various NATO-member intelligence organisations, including the American CIA and the French SDECE.
By this time, Georgiou was out of the army and working part-time in construction. He had few prospects for more stable and gainful employment, given his dishonorable discharge for his part in robbing a post office. He was dating a Greek Cypriot woman, Rona Angelo. Her cousin was 'Shotgun' Charlie Christodoulou, like Costas an ex-paratrooper of Greek Cypriot extraction, but honourably discharged. An acquaintance, Nick Hall, another dishonorably discharged airborne veteran, took the initiative of putting out an advertisement soliciting mercenary employment for four able-bodied young men. These would be Hall himself, Georgiou, Christodoulou and Costas's old comrade, Mick Wainhouse.
The men received a prompt reply from "Dr." Donald Belford, a former British Army medic who had volunteered for a humanitarian aid group in Africa some years before. While there, he had treated several Angolan fighters wounded in the struggle against the Portuguese, earning their friendship and trust. One of his friends was Holden Roberto, leader of the FNLA. After independence, Belford became Roberto's official emissary in the United Kingdom.
Georgiou in Angola
Georgiou was now using the nom de guerre "Colonel Tony Cullen" – the surname of a former army friend and not, as mistakenly alleged by some journalists, inspired by the TV espionage series Callan. He went to Angola to work as an unpaid medical orderly, in advance of his three colleagues. It was while he was working in this position that he took part in the decisive action that brought him to the notice of the FNLA leadership. When FNLA soldiers fled the advance of a MPLA force, which threatened to capture the hospital to which he was assigned, Georgious led a handful of Portuguese FNLA soldiers in an offensive defence, stopping the MPLA force in its tracks. The general trend of the war for the FNLA at that time was one of a steady string of defeats, ensuring that the defeat of the MPLA column attracted immediate attention from Holden Roberto who, to Georgiou's surprise, appointed him head of the FNLA army, with the rank of Colonel (still unpaid). His three friends arrived from Britain shortly afterwards.
Thanks to continuing recruitment in England, a somewhat larger mercenary contingent was formed, but a full battalion was never realised. The enlarged force was still rather small relative to MPLA/Cuban forces, and many of the men were civilians with no military experience, and often refusing to submit to military discipline. This, combined with the foreign, Mediterranean origin of most of the core leadership, (Georgiou, Christodoulou and the Portuguese), created a deep gulf between the officers and the British other ranks – to say nothing of the native Angolans recruited as infantry and support troops. Most of these had no military experience and many knew no English, or even Portuguese (then still the language of government and the native elite.)
The first contingent of mercenaries was mostly made up of professional soldiers, selected by a British PMC, Security Advisory Services (SAS), run by John Banks, Chris Dempster, and Dave Tomkins. Georgiou resented SAS's own leadership structure within the group, and perceived John Banks, who remained based in Britain, as a personal threat to his own position when Banks did visit Angola. Georgiou became increasingly paranoid and belligerent toward his own men, murdering African soldiers and creating a climate of fear even among the British mercenaries, none of which aided the morale of the FNLA forces or their ability to wage war successfully against the MPLA.
The second contingent of mercenaries sent from Britain, unlike the first, was made up mostly of working class men with no military experience. These undisciplined men quickly realised the perilous situation into which they had been placed, and the instability of their leadership. A group of them consequently seized vehicles and attempted to flee the country, firing on other FNLA forces in the process, including Chris Dempster. The deserters were quickly rounded up by Georgiou's men, and fourteen were summarily executed by firing squad.
A third contingent of similarly inept mercenaries was recruited in the US by an American PMC.
The "battalion" fought several more dramatic engagements, including successful ambushes of minor MPLA detachments. However, given his limited resources and the fact that many of his men – European and native alike – were untrained, increasingly demoralised amateurs, Georgiou's campaign was ultimately a failure. According to mercenary David Tomkins, the group spent most of its time foraging for food, usable weapons, and ammunition. Much of this foraging consisted of "raids" on villages, where the men would casually walk into town brandishing their weapons, searching for anything of use. Anyone who offered physical resistance would be shot.
Lack of proper equipment was one of the key factors in the failure of foreign mercenary units in Angola generally, and in Georgiou's case in particular. The MPLA had Soviet tanks, artillery and crack Cuban troops. The other two factions had mostly light infantry, not always the best trained and disciplined either. Another factor was leadership inexperience: Georgiou had absolutely no training or experience as a commissioned officer, nor did most of his counterparts in other units.
Trial and execution
Georgiou was tried under the jurisdiction of the Angolan MPLA government in the Luanda Trial during June and July 1976. He was charged with illegally entering Angola as a mercenary, along with twelve other defendants. In addition he was charged with involvement in the massacre of fourteen fellow mercenaries at Maquela do Zombo in northern Angola, as well as with the murder and torture of enemy soldiers and civilians in the town of São Salvador. The killings at Maquela occurred after some mercenary recruits had mistakenly opened fire on their colleagues and, fearing retribution by Georgiou and the MPLA, had subsequently fled towards Zaire, taking all the unit’s supplies.
Georgiou's sister was allowed to visit him during his captivity in Angola. In a BBC interview, she said they spoke mainly about their family and the trial proceedings, conversing in Greek. Georgiou's body was repatriated to England, and he was buried according to the rites of the Greek Orthodox Church.
- "Interview with Tony Clarke, Stormont Live Special - The Saville Inquiry Report, Stormont Live - BBC Two". BBC. Retrieved 2016-03-21.
- The Times (London, England), Saturday, Jun 12, 1976; page 1
- The Times (London, England), Saturday, Feb 14, 1976; pages 1 & 5
- The Times (London, England), Tuesday, Jun 29, 1976; pages 1 & 5
- The Times (London, England), Monday, Jul 12, 1976; page 1
- Brittain, Victoria (1997). Death of Dignity: Angola's Civil War. London: Pluto Press.
- French, Carey (1988). "Of Myths and Mercenaries." The Globe and Mail. 8 October.
- Stevens, Mark (1976). "Death for 'Dogs of War'." Newsweek. 12 July.
- Walker, J. F. (2004). A Certain Curve of Horn. New York: Grove Press.
- Dempster, Chris. Fire Power (first hand account of foreign mercenaries fighting on the side of the FNLA) 
- Kennedy, Bruce. Soldiers of misfortune: Mercenaries play major roles in 20th-century conflicts, from CNN's 1989 Cold War series. Accessed 22 January 2008
- Milliard, Todd S. Overcoming post-colonial myopia: A call to recognize and regulate private military companies(PDF), in Military Law Review Vol 173, June 2003. At the time of publication Major Milliard was a Judge Advocate in the Judge Advocate General's Corps, US Army. pp 39,40
- Staff. 1976: Death sentence for mercenaries, BBC, part of their "On this Day" series (28 June 1976). Accessed 22 January 2008
- Staff 1976: Mercenaries trial begins in Angola, BBC, part of their "On this Day" series (11 June 1976). Accessed 22 January 2008
- Staff, Good Guys, Bad Guys:Tomkins Interview National Security Archive, 22 February 1999. Hosted on the website of George Washington University.
- Unknown Author. 2000 Article – The killing of Colonel Callan,The ENIGMA 2000 Newsletter, Canard Volant Non Identifié, November 2005.
- on YouTube Time 3:28 – 5:56 – Captured and killed FNLA mercenaries possibly from the 14 Feb 76 ambushes of two FNLA patrols in Cuimba. In video clip at time 3:36 – 3:53 possibly wounded mercenaries Gustavo Grillo and John Nammock sitting in the back of a FAPLA truck. Time 4:33 and 4:53 possibly wounded mercenary Gary Acker. At 5:03 mercenary sitting on the ground wearing the beret is possibly Daniel Gearhart.