he joined forces with Lieutenant Colonel Soeprapto Sukowati until the Roem-Roijen agreement was reached and the transfer of sovereignty from the Netherlands to the republic. Political career Gerindo party Isnaeni entered Gerindo in July 1940. Shortly after his entry, he was chosen as the branch secretary of Gerindo in Madiun. His position in Gerindo connected him with national political figures, such as Wilopo and Adam Malik. He knew Adam Malik deeper due to Malik's position as the chairman of the Agitprop Department of Gerindo, and also due to Malik's frequent travel to the area. He quit the party in 1942, after the invasion of the Dutch East Indies by the Japanese Empire. Indonesian National Party After the independence of Indonesia, Isnaeni became active in politics again. He joined the Indonesian National Party in February 1946, and became the delegation for the Madiun branch of the party in the 1947 PNI Congress, which was located on his branch. 1955 elections Since 1958, Isnaeni was seated as the leading member of the Central Executive Council of PNI. On 29 June 1960, at the 9th Congress of the Indonesian National Party in Solo, Isnaeni was re-chosen as the principal member of the Central Executive Council of PNI, and at the next congress of the party in Solo in 1963, he was elected as the vice general secretary, with Surachman seated as the general secretary position. His disagreements with Surachman made him get fired from the party, along with 10 other figures from PNI. These figures later formed the Osa-Usep faction of the party in October 1964, named after the chairman and general secretary of the faction, Osa Maliki and Usep Hadisubeno. The faction was strictly anti-communist, as opposed to the communist Surachman. Surachman later found to be an Indonesian Communist Party cadre that entered PNI to disrupt the party. 30 September incident After the 30 September incident, PNI was "cleaned" by the government. The Surachman faction (known as Asu faction) was eliminated from the party, making the Osa-Usep faction the legitimate form of the party. Family Isnaeni was married to Juniati. Isnaeni met Juniati in the Indonesian Nation Scouting in Madiun. Both were married on 8 March 1942 at 9.00. At that time, the Imperial Japanese Navy Air Service were bombarding the airfield in Maospati, Madiun, and the Imperial Japanese Army were invading Madiun, causing the disruption of the marriage. The marriage resulted