[2] Following the capture of an extensive territory by the RIAU in November 1918, Chubenko met with the local commander of the Ukrainian People's Army in Katerynoslav, working out an agreement between the two forces for an alliance against the White movement.

[6] From March to July 1919, he was a diplomat in the Makhnovshchina and the chairman of many commissions negotiated with Dybenko on the conclusion of an alliance.

[8] During the RIAU's meeting with the green armies of Kherson, Chubenko spoke out against the ataman Nykyfor Hryhoriv, whom he accused of collaborating with the White movement and participating in antisemitic pogroms.

[9] Chubenko took responsibility for the assassination and invited the greens to join the RIAU, consolidating their forces for a counter-offensive against the Whites.

[10] He then acted as the chairman of the diplomatic commission for concluding an agreement with Symon Petliura at the Zhmerinka station on 20 September 1919.