Internal intelligence.
Before world war 2, Spain was involved in a civil war.
The SD was the Sicherheitsdienst the intelligence and security branch of the SS
The Germans had the Gestapo, the secret police force. The British had the SIS (Special Intelligence Service, also known as MI6) and SOE (Special Operations Executive). The Americans had the OSS (Office of Strategic Services), which housed the X-2 Branch, the main covert operations/secret intelligence force.
Great Britain
The venona project was a secret collaboration of the U.S and the U.K intelligence agencies involving cryptanalis of messages sent by the intelligence agencies of the the Soviet Union, mostly during world war II.
I don't believe that there were any organised intelligence agencies, although there may have been. I do know that none of the Intelligence agencies in the UK today existed at the time. They would definitely have used spies and informants however.
The CIA was created after World War Two. Before 1942 there was no national intelligence agency, but rather various parts of the federal govenment - the Army, Navy, Treasury Department, Federal Bureau of Investigation, State Department, etc. - collected information in areas in which they were interested. These departments and agencies often didn't share or analyze this information.
The National Security Act of 1947, which was signed into law by President Truman, restructured the intelligence and military agencies within the U.S. government. This was done after World War 2.
1949 was the beginning of the Cold War. The US and Soviet Union were competing to be the world leaders, and both created intelligence agencies to figure out what the other was doing.
He was some type of Psychologist before turning to writing. In World War II he was a military intelligence officer in the ETO.
He was some type of Psychologist before turning to writing. In World War II he was a military intelligence officer in the ETO.
The Danish military intelligence.
Military intelligence
Internal intelligence.
Kenneth E. DeGraffenreid has written "Intelligence and Military Operations" which examines the role of intelligence in military decision-making and "Strategic Intelligence in the Cold War and Beyond" which explores the development of intelligence agencies during the Cold War.
The intelligence branch of the OKW general staff