Chetnik: Originally a general term for Balkan guerillas, but during WWII and for the purposes of this novel, the name refers to the Serb group led by Draza Mihailovich, which was loyal to the Yugoslav king and was usually at war with German, Partisan, and Ustaše forces
Feldwebel: Noncommissioned officer in the German Army; rank similar to a sergeant in the US Army
Gefreiter: Soldier in the German Army; rank similar to a private in the US Army
General-potpukovnik: Partisan officer; rank similar to a Lieutenant General in the US Army
Kapetan: Partisan officer; rank similar to a captain in the US Army
Kriegsmarine: German Navy
Luftwaffe: German Air Force
MI5: British Security Service; responsible for counterintelligence
MI6: British Secret Intelligence Service; responsible for foreign intelligence
NKVD: Soviet Secret Police from 1934–1953; responsible for foreign and domestic espionage
OSS: Office of Strategic Services; US intelligence and sabotage agency that operated from June 1942–January 1946
OVRA: Organization for Vigilance and Repression of Anti-Fascism; Italian Secret Police under Mussolini that operated from 1927–1945
Partisans: During WWII, there were irregular partisan forces fighting against Nazi armies in most occupied countries, but for the purpose of this novel, the Partisans were Yugoslavs following the Communist leader Josip Tito
Pukovnik: Partisan or Chetnik officer; rank similar to a colonel in the US Army
SOE: Special Operations Executive; British intelligence and sabotage agency that operated from July 1940–January 1946
Ustaše: A WWII group in Yugoslavia aligned with Nazi Germany and comprised of Fascists, anti-Communists, and Croatian Nationalists
A. L. Sowards 