[2] TKR was formed as a result of improving the function of the previously existing People's Security Agency (BKR) and its core army was taken from the former KNIL & PETA.

With an unstable mental state, they were given the task by the allied forces to maintain security in Indonesia until they arrive in the lands of the new republic.

[4] On August 20, 1945, the Family Assistance Service for Victims of War (BPKKP; Indonesian: Badan Penolong Keluarga Korban Perang), was established.

BPP already existed during the Japanese occupation of the Dutch East Indies and was responsible for maintaining the welfare of PETA and Heiho.

[6]: 106 The BKR was formed by the Preparatory Committee for Indonesian Independence (PPKI) in its session on 22 August 1945 and announced by President Sukarno on the next day.

The armed Japanese occupation troops, complete with falling mental defeat, became a consideration as well, to avoid clashes when a national army was immediately formed.

[5]: 1  Members of the BKR at that time were young Indonesians who had previously received military education as Heiho soldiers, Pembela Tanah Air (PETA), the Royal Netherlands East Indies Army (KNIL) and others.

[3]: 158 The President made a speech by inviting youth volunteers, former members of PETA, Heiho, and the Imperial Japanese Navy to gather on August 24, 1945, in their respective regions.

These youths call themselves BKR administrators at the central level consisting of Kaprawi, Sutaklasana, Latief Hendraningrat, Arifin Abdurrachman, Machmud, and Zulkifli Lubis.

In addition to BKR Land, BKR Sea was also formed which was spearheaded by former students and teachers from the High School of Sailing (Indonesian: Sekolah Pelayaran Tinggi) and the sailors from the Shipping Service (Indonesian: Jawatan Pelayaran) consisting of Mas Pardi, Adam, Eddy Martadinata and R Suryadi.

[5]: 2 All these independent regional formations formed the basis of the Laskar groups that served as auxiliaries to the armed forces.

In Bogor, BKR was formed in October 1945 and was pioneered by former PETA members Husein Sastranegara and Ibrahim Adjie.

The result of these meetings was the September 10, 1945 formation of the BKR Navy Center led by Mas Pardi and then endorsed by the Central Indonesian National Committee.

In addition there were former Japanese aviators who served in the Nanpo Koku Kabusyiki and veterans of the Imperial Army and Navy, as well as Indonesian servicemen from these services.

[2] On October 20 1945 the government appointed Suprijadi as Supreme Leader of the TKR and Oerip Soemohardjo as Chief of General Staff.

In the second week of October 1945, Navy TKR units had been formed in the cities of Tanjung Karang, Palembang, Padang, Sibolga and Medan.