Genghis Khan originally formed 95 thousand-man units, known as mingghans. This reorganization is traditionally associated with the 1206 kurultai, when Temüjin was proclaimed Genghis Khan and the unified Mongol polity was formally structured.
The mingghan was part of a decimal military system. Ten households or warriors formed an arban, ten arbans formed a zuun, ten zuuns formed a mingghan, and ten mingghans could form a tümen of approximately 10,000. In practice, units were not always at their theoretical strength, but the system provided a clear chain of command and made the army easier to mobilize.
The reorganization also weakened older tribal loyalties. Genghis Khan deliberately mixed groups and placed many units under commanders chosen for loyalty and ability rather than only aristocratic birth. The 95 mingghans therefore represented more than a headcount: they were the military and administrative framework of the newly unified Mongol nation. The number 95 is often confused with 100 because the decimal system’s ideal structure was not identical to the historical allocation.