Key Facts
- Duration
- 1949–1955 (6 years)
- Sponsoring agency
- British Secret Intelligence Service (MI6)
- Agent nationalities
- Polish, Estonian, Latvian, Lithuanian exiles
- Naval operators
- German Mine Sweeping Administration under Royal Navy
- American partner
- Gehlen Organization
- Outcome for agents
- Most captured or turned by Soviet MGB
Strategic Narrative Overview
From 1949, MI6 trained Polish, Estonian, Latvian, and Lithuanian exiles in the United Kingdom and Sweden, then inserted them clandestinely into their home countries via naval operations conducted by German crews of the German Mine Sweeping Administration under Royal Navy supervision. The American-backed Gehlen Organization also contributed to agent recruitment. The operation aimed to establish contact with existing resistance networks and gather intelligence.
01 / The Origins
At the onset of the Cold War, British MI6 sought to exploit anti-Soviet sentiment among exile communities from Poland and the Baltic states. Communist consolidation of power in Eastern Europe and the existence of armed resistance movements—the cursed soldiers in Poland and the Forest Brothers in the Baltic states—provided both the motivation and a potential network for Western intelligence operations aimed at destabilising Soviet control.
03 / The Outcome
Soviet military intelligence, the MGB, successfully penetrated the operation, capturing or turning the majority of inserted agents. The compromise rendered the programme largely ineffective and it was wound down by 1955. The operation became a cautionary example of Cold War covert action undone by counterintelligence, leaving the resistance networks it sought to support exposed and without sustained Western backing.
Belligerents & Mobilization Analysis
Side A
2 belligerents
Side B
1 belligerent