word | | Military branches |
| Forces | Sierra Leone | Republic of Sierra Leone Armed Forces (RSLAF): Army (includes Maritime Wing and Air Wing) (2010) |
| Forces | Singapore | Singapore Armed Forces: Army, Navy, Air Force (includes Air Defense) (2010) |
| forces | Sint Maarten | ... its main operating base on Curacao and through a detachment on Sint Maarten; other local security forces include a coast guard, paramilitary National Guard (Vrijwilligers Korps Sint Maarten), and Police Force (KPSM ... |
| Forces | Slovakia | Armed Forces of the Slovak Republic (Ozbrojene Sily Slovenskej Republiky): Land Forces (Pozemne Sily), Air Forces (Vzdusne Sily) (2010) |
| Forces | Slovenia | Slovenian Army (includes Air and Naval Forces) |
| forces | Solomon Islands | no regular military forces; Solomon Islands Police Force (2011) |
| Forces | South Sudan | South Sudan Armed Forces |
| Forces | Spain | Spanish Armed Forces: Army (Ejercito de Tierra), Spanish Navy (Armada Espanola, AE; includes Marine Corps), Spanish Air Force (Ejercito del Aire Espanola, EdA) (2010) |
| Forces | Sudan | Sudanese Armed Forces (SAF): Land Forces, Navy (includes Marines), Sudanese Air Force (Sikakh al-Jawwiya as-Sudaniya), Popular Defense Forces (2011) |
| forces | Svalbard | no regular military forces |
| Forces | Sweden | Swedish Armed Forces (Forsvarsmakten): Army (Armen), Royal Swedish Navy (Marinen), Swedish Air Force (Svenska Flygvapnet) (2010) |
| Forces | Switzerland | Swiss Armed Forces: Land Forces, Swiss Air Force (Schweizer Luftwaffe) (2010) |
| Forces | Syria | Syrian Armed Forces: Syrian Arab Army, Syrian Arab Navy, Syrian Arab Air and Air Defense Forces (includes Air Defense Command) (2008) |
| Forces | Taiwan | Army, Navy (includes Marine Corps), Air Force, Coast Guard Administration, Armed Forces Reserve Command, Combined Service Forces Command, Armed Forces Police Command |