Military expenditures: Military branches: Military service age and obligation:
2.2% of GDP (2016)
2.05% of GDP (2015)
2.22% of GDP (2014)
2.25% of GDP (2013)
2.51% of GDP (2012)
country comparison to the world: 46
[see also: Military expenditures country ranks ]
Army, Royal Navy (includes Royal Marines), Royal Air Force (2013)
16-33 years of age (officers 17-28) for voluntary military service (with parental consent under 18); no conscription; women serve in military services including ground combat roles; must be citizen of the UK, Commonwealth, or Republic of Ireland; reservists serve a minimum of 3 years, to age 45 or 55; 17 years 6 months of age for voluntary military service by Nepalese citizens in the Brigade of Gurkhas; 16-34 years of age for voluntary military service by Papua New Guinean citizens (2016)