The Army is by far the largest part, with about 328,517 active-duty personnel, compared to around 74,963 in the Navy and 34,930 in the Air Force.. The Indonesian armed forces are voluntary. The available manpower fit for military service of males aged between 16 to 49 is 52,000,000, with a further 2,000,000 new suitable for service annually.
Military spending in the national budget was widely estimated 3% of GDP in 2005, but is supplemented by revenue from many military-run businesses and foundations. The Indonesian Defence force personnel does not include members of law enforcement and paramilitary personnel such as POLRI (Indonesian police) consisting of approximately 540,000 personnel, BRIMOB (police mobile brigade) of around 39,000 armed personnel, the Civil Service Police Unit, MENWA (collegiate military service) 26,000 trained personnel, and HANSIP (civil defense forces), number unknown.
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