In order to ascend the throne he had to first seek help from the Rashtrakutas who were hitherto their arch enemies. Butuga II first helped Amoghavarsha III regain many lost territories and in turn was helped by the Rashtrakuta ruler to overthrow Rachamalla III, the unpopular Ganga king at that time. This helped forge a strong relationship between the Gangas and the Rashtrakutas, an alliance that lasted till the end of both kingdoms. Butuga II became the son-in-law of Amoghavarsha III by marrying his daughter Revakanimmadi. He also helped the Rashtrakutas defeat the Cholas in c. 949 in the Battle of Takkolam when he killed the Chola monarch Rajaditya with a well aimed arrow when the Chola was seated on his elephant. As a Rashtrakuta feudatory, he not only ruled Gangavadi but also many areas in the Malaprabha River basin and the Krishna River-Tungabhadra doab. With his immense contribution to a Rashtrakuta victory over the Cholas, Butuga II also took charge of the Banavasi region as a fief from Rashtrakuta King Krishna III.

He was not only a valorous soldier but also a noted scholar. He is said to have a defeated a Buddhist scholar in a religious discourse and the Kudlur record speaks of him as a noted poet.

• History of Karnataka by Dr.Arthikaje
• History of Ganga Dynasty - Dr. Jyotsna Kamat