Military expenditures:
0.72% of GDP (2018)
0.84% of GDP (2017)
0.88% of GDP (2016)
0.89% of GDP (2015)
0.78% of GDP (2014)
country comparison to the world (CIA rank, may be based on non-current data): 136
[see also: Military expenditures country ranks ]

Military forces:
Indonesian National Armed Forces (Tentara Nasional Indonesia, TNI): Army (TNI-Angkatan Darat (TNI-AD)), Navy (TNI-Angkatan Laut (TNI-AL), includes marines (Korps Marinir, KorMar), naval air arm), Air Force (TNI-Angkatan Udara (TNI-AU)), National Air Defense Command (Komando Pertahanan Udara Nasional (Kohanudnas)), Armed Forces Special Operations Command (Koopssus), Strategic Reserve Command (Kostrad) (2019)
note:  the Indonesian National Police includes a paramilitary Mobile Brigade Corps (BRIMOB)

Military service age and obligation:
18-45 years of age for voluntary military service, with selective conscription authorized; 2-year service obligation, with reserve obligation to age 45 (officers); Indonesian citizens only (2013)

Maritime threats:
The International Maritime Bureau continues to report the territorial and offshore waters in the Strait of Malacca and South China Sea as high risk for piracy and armed robbery against ships; attacks declined for the third year in a row from 43 incidents in 2016 to 36 in 2018 due to aggressive maritime patrolling by regional authorities; in 2018, 29 commercial vessels were boarded and three crew members were taken hostage; hijacked vessels are often disguised and cargo diverted to ports in East Asia (2018)