word | | Military branches |
| Rzeczypospolitej | Poland | Polish Armed Forces: Land Forces (includes Navy (Marynarka Wojenna, MW)), Polish Air Force (Sily Powietrzne Rzeczypospolitej Polskiej, SPRP) (2008) |
| SAAF | South Africa | South African National Defense Force (SANDF): South African Army, South African Navy (SAN), South African Air Force (SAAF), Joint Operations Command, Military Intelligence, Military Health Service (2008) |
| SAF | Oman | Sultan's Armed Forces (SAF): Royal Army of Oman, Royal Navy of Oman, Royal Air Force of Oman (2008) |
| Saint | Saint Kitts and Nevis | Saint Kitts and Nevis Defense Force (includes Coast Guard), Royal Saint Kitts and Nevis Police Force |
| Saint | Saint Lucia | no regular military forces; Royal Saint Lucia Police Force (includes Special Service Unit, Coast Guard) (2007) |
| Saint | Saint Vincent and the Grenadines | no regular military forces; Royal Saint Vincent and the Grenadines Police Force, Coast Guard (2007) |
| Salvadoran | El Salvador | Salvadoran Army (ES), Salvadoran Navy (FNES), Salvadoran Air Force (Fuerza Aerea Salvadorena, FAS) (2008) |
| Salvadorena | El Salvador | Salvadoran Army (ES), Salvadoran Navy (FNES), Salvadoran Air Force (Fuerza Aerea Salvadorena, FAS) (2008) |
| Samoa | Samoa | no regular military forces; Samoa Police Force (2008) |
| SAN | South Africa | South African National Defense Force (SANDF): South African Army, South African Navy (SAN), South African Air Force (SAAF), Joint Operations Command, Military Intelligence, Military Health Service (2008) |
| SANDF | South Africa | South African National Defense Force (SANDF): South African Army, South African Navy (SAN), South African Air Force (SAAF), Joint Operations Command, Military Intelligence, Military Health Service (2008) |
| Sanitaetsdienst | Germany | Federal Armed Forces (Bundeswehr): Army (Heer), Navy (Deutsche Marine, includes naval air arm), Air Force (Luftwaffe), Joint Service Support Command (Streitkraeftebasis), Central Medical Service (Zentraler Sanitaetsdienst) (2006) |
| Sao | Sao Tome and Principe | Armed Forces of Sao Tome and Principe (FASTP): Army, Coast Guard of Sao Tome e Principe (Guarda Costeira de Sao Tome e Principe, GCSTP), Presidential Guard (2007) |
| Schweizer | Switzerland | Swiss Armed Forces: Land Forces, Swiss Air Force (Schweizer Luftwaffe) (2007) |
| secession | Ethiopia | Ethiopian National Defense Force (ENDF): Ground Forces, Ethiopian Air Force (ETAF) (2008) note: Ethiopia is landlocked and has no navy; following the secession of Eritrea, Ethiopian naval facilities remained in Eritrean possession |
| Second | China | ... Army (PLA): Ground Forces, Navy (includes marines and naval aviation), Air Force (includes airborne forces), and Second Artillery Corps (strategic missile force); People's Armed Police (PAP); Reserve and Militia Forces (2008 |
| Secretaria | Mexico | Secretariat of National Defense (Secretaria de Defensa Nacional, Sedena): Army (Ejercito, includes Mexican Air Force (Fuerza Aerea Mexicana, FAM)); Secretariat of the Navy (Secretaria de Marina, Semar): Mexican Navy (Armada de Mexico ... |
| Secretariat | Mexico | Secretariat of National Defense (Secretaria de Defensa Nacional, Sedena): Army (Ejercito, includes Mexican Air Force (Fuerza Aerea Mexicana, FAM)); Secretariat of the Navy (Secretaria de Marina, Semar): Mexican Navy (Armada de Mexico ... |
| security | Canada | Canadian Forces: Land Forces Command (LFC), Maritime Command (MARCOM), Air Command (AIRCOM), Canada Command (homeland security) (2008) |
| Security | Comoros | National Development Army (AND): Comoran Security Force; Comoran Federal Police (2008) |
| Security | Congo, Republic of the | Congolese Armed Forces (Forces Armees Congolaises, FAC): Army, Navy, Congolese Air Force (Armee de l'Air Congolaise), Gendarmerie, Special Presidential Security Guard (GSSP) (2008) |
| Security | Costa Rica | no regular military forces; Ministry of Public Security, Government, and Police (2008) |
| Security | Cote d'Ivoire | Cote d'Ivoire Defense and Security Forces (FDSC): Army, Navy, Air Force (2006) |