ADF–Association des Dames Française
ATS–Auxiliary Territorial Service
BSC–British Security Coordination
CIA–Central Intelligence Agency
COI–Coordinator of Information
MO–Morale Operations
MU–Maritime Unit
R&A–Research and Analysis
SO–Special Operations
X-2–Counter Intelligence
CSP–Contact and Source in Place
FANY–First Aid Nursing Yeomanry
FBI–Federal Bureau of Investigation
FTP–Francs-Tireurs et Partisans
MI5–Security Service
MI6–Secret Intelligence Service (SIS)
NAAFI–Navy, Army and Air Force Institutes
NI–Navy Intelligence
NKVD–Soviet intelligence; translates to People’s Commissariat for Internal Affairs
ODA–Order of Departure of Agents
OSS–Office of Strategic Services
OSS London:
Communications and Propaganda
Country Units
R&A–Research and Analysis
Sabotage
SI–Secret Intelligence
SO–Special Operations
X-2–Counter Intelligence
RAF–Royal Air Force
SAS–Special Air Service
SD–Sicherheitsdienst, the intelligence branch of the SS
SIS–Secret Intelligence Service (MI6)
SLU–Special Liaison Unit
SOE–Special Operations Executive
SS–Schutzstaffel
STO–Service du Travail Obligatoire
USAAF–United States Army Air Force
WAAF–Women’s Auxiliary Air Force