The chief characteristic feature of the Mongol army was its strong cavalry. Genhis Khan arranged his army in the multiples often (10,100,1000,10000). The main attraction of the army was the small canons which could be used while sitting on horseback. Genghis Khan also maintained a well-organized espionage.
To connect the distant places of the empire with the administrative center, the Mongolians introduced postal system using horses. This communication system was known as the ‘courier’. The courier system of Genghis Khan was speedy and effective.
