History of the Indonesian National Armed Forces (TNI)

The Indonesian National Armed Forces (TNI) was officially established on June 3, 1947, by President Sukarno as an effort to unite the regular army (TRI) with the people's struggle troops. However, the TNI's birthday is commemorated every October 5, which refers to the establishment of the People's Security Army (TKR) as Indonesia's first official armed force in 1945.

The TNI's long history has seen several name and organizational changes to adapt to the country's political situation and defense tactics.

Chronology of TNI Organizational Changes: 

People's Security Agency (Badan Keamanan Rakyat - BKR) — August 22, 1945. 

After the proclamation of independence, the government did not immediately form a national army to avoid armed confrontation with Allied and Japanese forces. The government established the BKR, which was initially tasked with maintaining public order under the auspices of the Central Indonesian National Committee (KNIP). Its members are dominated by young people who were former Defenders of the Homeland (PETA), Heiho, and the Royal Netherlands East Indies Army (KNIL). 

People's Security Army (Tentara Keamanan Rakyat - TKR) — October 5, 1945 

Seeing the threat of the Dutch military who wanted to re-colonize Indonesia, President Soekarno inaugurated the TKR as the first official armed forces. 

The formation of the TKR was led by Commander-in-Chief General Soedirman and managed by Chief of General Staff Lieutenant General Oerip Soemohardjo. 

Republic of Indonesia Army (Tentara Repuplik Indonesia - TRI) — January 23, 1946 

To improve international military standardization and improve the organizational structure of state defense, the TKR was renamed TRI. Outside of TRI, at that time there were still many armed forces formed by community groups independently. 

Indonesian National Army (Tentara Nasional Indonesia - TNI) — June 3, 1947 

In order to avoid dualism of leadership and unite the Indonesian armed forces, President Soekarno merged TRI with all the people's struggle forces into a single entity called the Indonesian National Army (TNI). 

Armed Forces of the Republic of Indonesia (Angkatan Bersenjata Republik Indonesia - ABRI) — 1962 

During the Guided Democracy era, the government united the Armed Forces (AD, AL, AU) with the National Police (Polri) into a single defense and security institution called ABRI. This merger was intended for command efficiency and to minimize internal conflict. 

Returning to TNI — April 1, 1999 

Entering the reform era, the concept of the military's dual function was abolished. ABRI was officially separated again. The police institution changed to Polri which focused on domestic security/law enforcement, while the military institution returned to using the name TNI which focused fully on the national defense sector.