As a General, Kaarg was often thought of as a back-room planner lacking the ability to actually lead. He relied on strategy to a much greater extent than force, such as his infamous stalling of a Tholian incursion fleet in 2309 (TLE novel: Serpents Among the Ruins).
When rumors arose that Azetbur was soon to be challenged by General Gorak, Kaarg offered to extend some of his guards to defend Azetbur. One of these guards, Morahg (actually Ditagh in disguise), killed Gorak during his attempt on Azetbur, but then turned to murder Azetbur so that General Kaarg could rise to become Chancellor (TLE novel: Serpents Among the Ruins).
One of Kaarg's first acts as Chancellor was to ban women from ever again holding the office of Chancellor. Overall, Kaarg was thought of as a Chancellor who did little to advance the empire in any significant way. After Kaarg's death, he was succeeded by Ditagh (TLE novel: The Art of the Impossible).