[7] At this time, Ozanyan began to rise in the ranks of the TKP/ML, and became an important organizer, ideologist, recruiter, trainer and frontline commander for the party.

[7] In July 2015, he became one of the commanders of the newly founded International Freedom Battalion (IFB) in Syria, whose aim was to aid the YPG/YPJ against the Islamic State in the Rojava-Islamist conflict.

As a member of the IFB, he trained "many Kurdish, Turkish, Armenian, Arab, Palestinian, Greek, Canadian, Sardinian, Belgian and French internationalist fighters.

"[8] Meanwhile, he attempted to keep the TKP/ML intact and active in Turkey, where the party faced increasing problems as the Turkish Armed Forces intensified their counter-insurgency campaign after the start of the Kurdish–Turkish conflict's third phase.

[7] On 24 April 2019, a group of Syrian Armenians who were affiliated with TKP/ML and the SDF announced the formation of the Martyr Nubar Ozanyan Brigade.