Rwanda
16 years of age for voluntary military service; no
conscription (2001)
Saint Kitts and Nevis
18 years of age (est.) (2004)
Sao Tome and Principe
18 years of age (est.) (2004)
Saudi Arabia
18 years of age (est.); no conscription (2004)
Senegal
18 years of age for compulsory and voluntary military
service; conscript service obligation - two years (2004)
Serbia
peacetime service obligation begins at age 17 and lasts until
age 60 for men and 50 for women; under a state of war or impending
war, the obligation can begin at age 16 and be extended beyond 60
(2006)
Seychelles
18 years of age (est.); no conscription (2001)
Sierra Leone
18 years of age (est.); no conscription (2001)
Singapore
18 years of age for compulsory military service; 16 years
of age for volunteers; conscript service obligation reduced to 24
months beginning December 2004 (2004)
Slovakia
complete transition to an all-volunteer professional force
went into effect at the beginning of 2006 after 140 years of
mandatory army service; volunteers include women, with minimum age
of 17 years (2005)