Kammala wannan jumla: An zabi Roy a cikin kwamitin tsakiya na Krishak Samiti da Jam'iyyar Kwaminis a 1968. A wannan lokacin ya kasance a ɓoye daga 'yan sanda kuma ya taimaka wajen shirya zanga-zangar adawa da Shugaba Ayub Khan. Ya yi kamfen ne don dan takarar Jam'iyyar Kwaminis a babban zaben Pakistan na shekarar 1970. Bayan fara yakin neman 'yancin Bangladesh a 1971, ya koma Indiya kuma ya horar da shi a matsayin memba na Mukti Bahini. Ya taimaka wajen shirya horo a sansanin Mukti Bahini Balat a Meghalaya, Indiya. Ya taimaka wajen shirya sojojin 'yan daba da suka hada da' yan siyasa na hagu don yakar sojojin Pakistan a yankin.
Yakin 'Yantar da Bangladesh.