The Signals Intelligence Service was the original US Army Cryptologic unit that was started after WWI and ended in 1942. This Army element is pretty much what became the modern day National Security Agency (NSA).
Another SIS, which Ive posted, is the British Secret Intelligence Service or MI6. Their equivalent of the CIA.
HOWEVER...
In doing some additional Rabbit Hole Spelunking, I am leaning toward something a little different.
SIS *also* means the Schengen Information System. The Schengen agreement is a foundational document that is the tie that binds a lot of the other European Union agreements in matters of trade, taxation, migration, border controls, etc.
The Schengen Information System (SIS), ...is used by twenty-six European countries to find information about individuals and entities for the purposes of national security, border control and law enforcement. A second technical version of this system, SIS II, went live on 9 April 2013. ( https://en.wikipedia.org/wiki/Schengen_Information_System ).
What tripped my trigger was EU Law Enforcement. I posit that, since Q has consistently emphasized the global nature of corruption and clean-up (WW), that the Schengen IS may be an important player in rounding up Euro trash.
I humbly suggest and submit that the Schengen Information System be considered in Swordmakers Lexicon as a possible decode for SIS in Q post #1334.
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Todays revisions and additions:
- ROT: (#1428) Rotation, in relation to the photographs taken from what is alleged to be NSA traffic cams in London.
. . .
- SIS: (#144) two possibilities:
- Secret Intelligence Service, the UKs MI6.
- Special Intelligence Service, a defunct NAZI-specialist part of FBI that was rolled into the CIA. (Thanks for both entries above to FreeQ Cboldt).
- Signal Intelligence Agency: The Signal Intelligence Service (SIS) was the United States Army codebreaking division, headquartered at Arlington Hall (former campus of Arlington Hall Junior College for Women, founded 1927 to 1942, on Arlington Boulevard in Arlington, Virginia, across the Potomac River from Washington, D.C.). It was a part of the U.S. Army Signal Corps so secret that outside the office of the Chief Signal officer, it did not officially exist. SIS was an early predecessor to the modern National Security Agency (NSA) and later appropriated by the National Security Council who reappointed the resources into the modern NSA.(Thanks to FreeQ truthluva). (See NSA).
- Schengen Information System The Schengen agreement is a foundational document that is the tie that binds a lot of the other European Union agreements in matters of trade, taxation, migration, border controls, etc. The "Schengen Information System (SIS) is used by twenty-six European countries to find information about individuals and entities for the purposes of national security, border control and law enforcement. A second technical version of this system, SIS II, went live on 9 April 2013. Schengen Information System). Given the global nature of corruption and clean-up (WW), its possible the Schengen-IS may be an important player in rounding up Euro corrupt players. (Thanks to FreeQ KitJ).