Saudi Arabia
18 years of age (est.); no conscription (2004)
Senegal
18 years of age for compulsory and voluntary military
service; conscript service obligation - 2 years (2004)
Serbia
17 years of age for male compulsory military service; 18
years of age for voluntary service; conscription to be abolished
effective 2011; 6-month service obligation, with a reserve
obligation to age 60 for men and 50 for women (2010)
Seychelles
18 years of age for voluntary military service (younger
with parental consent); no conscription (2010)
Sierra Leone
17 years 6 months of age for male and female voluntary
military service (younger with parental consent); no conscription;
candidates must be HIV negative (2009)
Singapore
18-21 years of age for male compulsory military service;
16 years of age for volunteers; 2-year conscript service obligation,
with a reserve obligation to age 40 (enlisted) or age 50 (officers)
(2008)
Sint Maarten
no conscription (2010)
Slovakia
18-30 years of age for voluntary military service;
conscription abolished in 2006; women are eligible to serve (2010)
Slovenia
18-25 years of age for voluntary military service;
conscription abolished in 2003 (2010)
Somalia
note: since 2005, the UN has listed the Transitional Federal
Government and its allied militias as persistent violators in
recruiting child soldiers (2010)