The Mobile Brigade Corps is a large component of the Indonesian National Police trained for counter-separatist and counter-insurgency duties, often in conjunction with military operations.

Formed in late 1945 as a special police corps named Pasukan Polisi Istimewa (Special Police Troops) with the task of disarming remnants of the Japanese Imperial Army and protecting the chief of state and the capital city.

Under the Japanese, it was called Special Police Unit (特別警察隊, Tokubetsu Keisatsutai, not to be confused with the IJN Tokkeitai).

It fought in the revolution and was the first military unit to engage in the Battle of Surabaya under the command of Police Inspector Moehammad Jasin.

As of 14 November 1961, the Mobrig changed its name to Korps Brigade Mobil (Brimob), and its troops took part in the military confrontation with Malaysia in the early 1960s and in the conflict in East Timor in the mid-1970s.

The Mobile Brigade, which began forming in late 1946 and was used during the anti-Dutch Revolution, started sending students for US Army SF training on Okinawa in January 1959.

The Implementation and mobilization of the Brimob Corps is to cope with high-level interruption of society mainly: mass riots, organized crime armed with fire, search and rescue, explosives, chemicals, biological and radioactive threats along with other police operational implementing elements in order to realize legal order and peace of society throughout juridical of Indonesia and other tasks assigned to the corps.

The Pelopor qualifications, which are the basic capabilities of every Brimob member, are the following basic skills: The function of the Police's Mobile Brigade Corps as the Polri's Principal Operating Unit which has specific capabilities (Riot control, Combat Countermeasures, Mobile Detective, Counter-terrorism, Bomb Disposal, and Search and Rescue) in the framework of High-level domestic security and community-supported search and rescue personnel who are well trained and have solid leadership, equipment and supplies with modern technology.

The role of Brimob is together with other police functions is to act against high-level criminals, mainly mass riots, organized crime of firearms, bombs, chemicals, biology and radio active threats in order to realize the legal order and peace of society in all juridical areas of Indonesia.

"Pioneer") is the main reaction force of the Mobile Brigade Corps, it acts as a troop formation and has the roles of mainly riot control and conducting paramilitary operations assigned to the corps to cope with high-level threat of society disturbance.

In 1959, during its first formation, Brimob Rangers troops conducted a test mission in the area of Cibeber, Ciawi and Cikatomas which borders Tasikmalaya-Garut in West Java.

It was the baptism of fire of the Rangers, in which the newly acquired skills of guerrilla warfare and counter-insurgency operations were applied against remnants of Darul Islam in these communities.

It was the Brimob Rangers troops became part of the Bangka Belitung Infantry Battalion led by Lieutenant Colonel (Inf) Dani Effendi.

Rangers were tasked to capture the remains of the PRRI prison in Sumatra's forests led by Major Malik, which was then under rebel hands.

At this time also the Pelopor constables and NCOs received many brand new weapons for police and counter-insurgency operations, including the more famous AR-15 assault rifles.

The subsequent assignment of this force was to infiltrate West Irian in Fak-Fak in May 1962 and engage in combat with the servicemen of the Royal Netherlands Army during Operation Trikora.

On the other hand, it also specializes in the field of hostage rescue, intelligence and CBR (Chemical, biological and radiological) defense.

In Search and Rescue operations, the personnel are required to have the basic capabilities of diving, rappelling, shooting, and first aid.

[12][13] On 16 January 2023, Mobile Brigade members "intimidate" and disrupted the trial by chanting in the courtroom.