Military and Police
- Soldier Support Institute
- Selective Service Initiative, a form of military conscription in the United States
- Senior station inspector, a rank in the Singapore Police Force
- Serviciul Special de Informaţii, the Romanian intelligence service between November 1940 and September 1944
- Shoulder Sleeve Insignia (US Army), formation insignia used by the United States Army
- Staff Sergeant Instructor, an appointment in the British Army
- Subsecretaria de Inteligência, the Brazilian intelligence agency until 1995
- State Security Intelligence agency of Egypt
Read more about this topic: SSI
Famous quotes containing the words military and/or police:
“In early times every sort of advantage tends to become a military advantage; such is the best way, then, to keep it alive. But the Jewish advantage never did so; beginning in religion, contrary to a thousand analogies, it remained religious. For that we care for them; from that have issued endless consequences.”
—Walter Bagehot (1826–1877)
“The State has but one face for me: that of the police. To my eyes, all of the State’s ministries have this single face, and I cannot imagine the ministry of culture other than as the police of culture, with its prefect and commissioners.”
—Jean Dubuffet (1901–1985)