The Indonesian National Armed Forces (Tentara Nasional Indonesia; abbreviated as TNI) are the military forces of the Republic of Indonesia. It consists of the Army (TNI-AD), Navy (TNI-AL), and Air Force (TNI-AU). The President of Indonesia is the commander-in-chief of the Armed Forces. , it comprises approximately 395,500 military personnel including the Indonesian Marine Corps (Korps Marinir RI), which is a branch of the Navy.
Initially formed with the name of the People's Security Army (TKR), then later changed to the Republic of Indonesia Army (TRI) before changing again its name to the Indonesian National Armed Forces (TNI) to the present. The Indonesian Armed Forces were formed during the Indonesian National Revolution, when it undertook a guerrilla war along with informal militia. As a result of this, and the need to maintain internal security, the Armed forces including the Army, Navy, and Air Force has been organised along territorial lines, aimed at defeatin