During World War II, the Secret Intelligence Service (SIS) was created to intercept and decipher the communications of the Axis powers. When the war ended, the SIS was reorganized as the Army Security Agency (ASA), and it was placed under the leadership of the Director of Military Intelligence.
NO, the covert branch did NOT end. It appeared to be absorbed by the CIA, but it really evolved into the NSA.
That is how SIS = good.
sauce: https:// en.wikipedia.org/wiki/National_Security_Agency
Looks like both the US and the UK have a SIS.
Perhaps UK:US and US:UK means there is reciprocity between the two?
Here is the timeline:
1) During World War II, the Secret Intelligence Service (SIS) was created to intercept and decipher the communications of the Axis powers.
2) When the war ended, the SIS was reorganized as the Army Security Agency (ASA), and it was placed under the leadership of the Director of Military Intelligence.
3) On May 20, 1949, all cryptologic activities were centralized under a national organization called the Armed Forces Security Agency (AFSA). This organization was originally established within the U.S. Department of Defense under the command of the Joint Chiefs of Staff.
4)In December 1951, President Harry S. Truman ordered a panel to investigate how AFSA had failed to achieve its goals. The results of the investigation led to improvements and its redesignation as the National Security Agency.
SIS ASA > AFSA > NSA