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, military and/or police:
“The military and the clergy cause us much annoyance; the clergy and the military, they empty our wallets and rob our intelligence.”
—Franz Grillparzer (1791–1872)
“The domestic career is no more natural to all women than the military career is natural to all men.”
—George Bernard Shaw (1856–1950)
“I guess a career in the police didn’t really prepare you for this, did it?”
—Bob Hunt (b. 1951)