Factions in Counter-Strike Online:
- Main article Counter-Terrorist.
- American SEAL Team 6 (DEVGRU)
- German GSG-9
- British SAS
- French GIGN
- Russian Spetsnaz
- Korean 707th Special Mission Battalion
- Taiwanese Sozo Thunder Squad
- Japanese SAT
- Chinese PLA Special Force
- Singaporean SAF Scout
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