After joining the Indonesian Army, Bambang was assigned to
Kopassus, Indonesia's special forces. His career in Kopassus slowly rose due to the patronage of
Prabowo Subianto, Suharto's son-in-law. Upon Prabowo's appointment as the commanding general of Kopassus, Bambang was assigned to Group 4 of Kopassus and became Prabowo's secretary. He was later appointed the commander of 42nd Kopassus Battalion. He was tasked by Prabowo in 1997 to form the Pigeon Task Force, a secret task force inside Kopassus. Bambang, who was a major at that time, instructed three of the officers in the task force to analyze information and form three separate teams inside the task force. The three teams had different tasks: the Rose Team was tasked to "detect radical groups, rioters, and terrorists", the Junior Guard Team was tasked to rally students, and the support team was tasked to assist military operations. The Rose Team was commanded by Bambang himself and consisted of several Kopassus officers (these officers would later hold important military offices after Prabowo Subianto became defense minister) and subalterns. The funds for the Rose Team came from Kopassus's budgets and savings from the 42nd Battalion bank account. The Rose Team later kidnapped several activists in protests that occurred during the course of the
fall of Suharto. Among those kidnapped by the Rose Team was
Desmond Junaidi Mahesa, who later served as a member of the People's Representative Council for the
Gerindra Party alongside Bambang in 2019. In the aftermath of the kidnappings, both Prabowo and Bambang were tried by the court. The trials resulted in different conclusions. The military court which tried Prabowo, concluded that the kidnappings were done under the command of Prabowo Subianto and Chairawan K. Nusyirwan (Bambang's immediate superior in Kopassus). Several months after Prabowo's trial, Bambang was tried and testified that he did the kidnappings under his own initiative. Chairman of Indonesia's human rights commission,
Marzuki Darusman, described Bambang's trial as odd as it did not explain the chain of command in Kopassus. Nevertheless, Bambang was fired from the military in February 1999 and was sentenced to 22 months in prison. == Business and political career ==