[4][5][1] He was the fourth highest-ranking member of the Communist Party of Indonesia's Politburo, and was the only one of the five senior leaders of PKI to be tried.

[3] Sudisman tried to reorganize the PKI into an underground movement after other senior leaders were captured and summarily executed.

However, they claimed that the 30 September Movement was justified as there had really been a so-called "Council of Generals" that had plotted against Sukarno to take power after his death, or to depose him.

[6] Sudisman's testimonies gave a plausible explanation that PKI as an organization had not been involved with the coup attempt, and Dipa Nusantara Aidit had been the person who had acted on his own initiative and plotted with the officers.

The resulting elimination of the PKI from Indonesian politics achieved goals of right-wing officers and Muslim extremists who were backed by the United States.