Russia
18-27 years of age for compulsory or voluntary military
service; males are registered for the draft at 17 years of age;
service obligation - 1 year; reserve obligation to age 50; as of
July 2008, a draft military strategy called for the draft to
continue up to the year 2030 (2008)
Rwanda
18 years of age for voluntary military service; no
conscription (2008)
Saint Kitts and Nevis
18 years of age for voluntary military
service; no conscription (2008)
San Marino
16-55 for voluntary service in Voluntary Military Force
(2006)
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 - 2 years (2004)
Serbia
19-35 years of age for compulsory military service; under a
state of war or impending war, conscription can begin at age 16;
conscription is to be abolished in 2010; 9-month service obligation,
with a reserve obligation to age 60 for men and 50 for women (2007)
Seychelles
18 years of age for voluntary military service (younger
with parental consent); no conscription (2008)
Sierra Leone
17 years 6 months of age for voluntary military service
(younger with parental consent); no conscription (2008)