Military branches:
Armenian Armed Forces: Ground Forces, Air Force and Air Defense; "Nagorno-Karabakh Republic": Nagorno-Karabakh Self-Defense Force (NKSDF) (2011)

Military service age and obligation:
18-27 years of age for voluntary or compulsory military service; 2-year conscript service obligation; 17 year olds are eligible to become cadets at military higher education institutes, where they are classified as military personnel (2012)

Military expenditures:
4.24% of GDP (2015) 4.29% of GDP (2014) 4.1% of GDP (2013) 3.92% of GDP (2012) 3.87% of GDP (2011)
country comparison to the world: 10
[see also: Military expenditures country ranks ]