Named after a ferocious big cat, the MT-56 Okat was a Medium Tank designed in Gosnossau. It was an effective replacement for the MT-44, and served with several overseas deployments of the Gosnossau Marines. The MT-56 would also find service both in less developed UIR states, as well as by their COG controlled successor states, particularly due to the capturing of the T-56E export variant factory in Jaunus. They would continue to see service both in the still rebellious and cut off Gosnossau and the COG during E-day and afterwards, albeit with most of the COG's stock quickly being destroyed, and a majority of Gosnossau's Okats replaced by the newer tank variants wherever possible.