English abbreviations from s2 to sa
- S2 (shuttle 2)
- S-2 (Army Intelligence Staff at the Battalion/Brigade level)
- S28D (Society of the 28th Division Allied Expeditionary Forces)
- S2E (Seamless Synthetic Environment)
- S-3 (Army Operations Staff at the Battalion/Brigade level)
- S3I (Signatures, Sensors, and Signal Procession Integration)
- S3ID (Society of the 3rd Infantry Division)
- S3IDSF (Society of the 3rd Infantry Division Scholarship Foundation)
- S-4 (Army Logistics Staff at the Battalion/Brigade level)
- S4C (Stand For Children)
- S-5 (Army Civilian Affairs/Public Affairs Staff at the Battalion/Brigade level)
- S5D (Society of the 5th Division)
- S-6 (Army Communications and Information Management Staff at the Battalion/Brigade Level)
- S-7 (Army Inter-Component Integration Staff at the Battalion/Brigade Level)
- S-8 (Army Resource Management Staff at the Battalion/Brigade Level)
- S-9 (Army Facilities Management Staff at the Battalion/Brigade Level)
- SA (Seaman Apprentice)
- S.A. (designation for a corporation in many European countries; see article for meanings)