Republican Security Forces
The Republican Security Forces (RSF) were a parallel version of UNIT on Earth in a parallel universe. They were overseen by the Security Directorate.
The RSF was founded in 1959 by Major James Lethbridge-Stewart and Captain Marianne Kyle. (PROSE: The Schizoid Earth) Shortly after its establishment they battled the Bannermen in Wales, from whom they obtained artificial gravity and fast drive technology which allowed them to construct a base in space. (PROSE: The Face of the Enemy)
During the 1960s, the RSF fought many alien threats under the leadership of James Lethbridge-Stewart, including the Great Intelligence and the Axons. (PROSE: Night of the Intelligence) They would also carry out general security operations, investigated political criminals, and did expeditionary work abroad. (PROSE: I, Alastair)
The RSF's encounter with the Great Intelligence brought them into contact with the Master's counterpart Koschei, who helped them battle the Intelligence at the expense of his TARDIS, which was ruined though the console was salvaged. The RSF tortured Koschei and Ailla, eventually killing her though it's unknown if she somehow survived through regeneration.
When the RSF reviewed recordings of the Doctor's TARDIS arriving in their universe, they realised they could do the same with Koschei's own TARDIS. They tortured him, forcing him to go through his regenerations rapidly until he had none left and was kept alive, in agony, on life-support systems. (PROSE: Night of the Intelligence)
However, the RSF could not avoid being drawn under the control of James's power hungry father, Gordon Lethbridge-Stewart. By the end of the 1960s, Gordon had taken the reigns of power and alienated James through his ultranationalist policies. James fled to another Earth using technology stolen from the Axons. (PROSE: Night of the Intelligence)
When Alastair Lethbridge-Stewart was a Column Leader, the RSF was - to his annoyance - used by Party figures against each other, reporting their rivals and children of rivals for 'crimes'. The RSF made use of South African mercenaries. The headquarters was Leconfield House in London, which also held interrogation cells.(PROSE: I, Alastair)
In the 1970s, they were stationed at the Eastchester scientific labour camp to guard the Inferno Project. Despite the arrival of the Third Doctor, they proved unable to stop the Primords or the project from destroying the planet. (TV: Inferno)
Behind the scenes
- Some of the RSF ranks in Inferno are English translations of ranks from the Nazi SS and Stormtroopers: Brigade Leader from Brigadeführer, Section Leader from Rottenführer. Platoon Under-Leader may be a mistranslation of [Unterscharführer] ("junior squad leader"), a sergeant-equivalent rank.
- While the ranks and iconography refer to the Nazis, the RSF's guns are noted by the BBC to be Soviet Simonov SKSs. In The Schizoid Earth, the regular Lethbridge-Stewart believes he's behind the Iron Curtain as he identifies the guns as a version of the Russian PPSH machine gun.
- Leconfield House was the home of MI5 from 1945 to 1976.
