Subject
Soviet Union Politics and government
44
Soviet Union Foreign relations
28
Soviet Union Military policy
19
History
18
Soviet Union History
12
World War, 1939-1945 Campaigns
11
Cold War
10
United States Foreign relations
10
Soviet Union Officials and employees
8
Intelligence service History
7
Communism
6
Prisoners of war
6
Germany Armed Forces History
5
Soviet Union Armed Forces History
5
Soviet Union History, Military
5
China Foreign relations
4
Espionage, Soviet History
4
Europe, Eastern Foreign relations
4
Europe, Eastern History, Military
4
Military doctrine
4
Soviet Union
4
Soviet Union Relations
4
Stalingrad, Battle of, Volgograd, Russia, 1942-1943
4
World War, 1939-1945
4
World War, 1939-1945 Urban warfare
4
Communism and international relations
3
Cuban Missile Crisis, 1962
3
Czechoslovakia History
3
Defensive (Military science)
3
Heads of state
3
Military art and science
3
Soviet Union Defenses
3
United States Politics and government
3
Armed Forces
2
Astronautics History
2
Berlin (Germany) History
2
Berlin (Germany) Politics and government
2
Berlin Wall, Berlin, Germany, 1961-1989
2
Cold War Military intelligence
2
Constitutional law
2
Czechoslovakia Foreign relations
2
Deterrence (Strategy)
2
Emigration and immigration law
2
Espionage, American
2
Heads of state Succession
2
Influence
2
Intelligence service
2
Jews History
2
Manchuria (China) History
2
Martial law
2
more ...