Genghis khan

He created one of the first international postal systems.

Along with the bow and the horse, the Mongols most power weapons is their network of his earliest decrees as Khan involved the formation of a mounted courier service known as the “Yam.” This medieval express consisted of a well-organized series of post houses and way stations strung out across the whole of the Empire. By stopping to rest or take on a fresh mount every few miles, official riders could often travel as far as 200 miles a day. The system allowed goods and information to travel with unprecedented speed, but it also acted as the eyes and ears of the Khan. With this yam he mantains contact with his extensive network of spies and scouts. The Yam also helped protect foreign dignitaries and merchants during their travels. In later years, the service was famously used by the likes of Marco Polo and John of Plano Carpini

Even he is well known famous for his strategics

He established the largest land empire in history. After uniting the nomadic tribes of the Mongolian plateau, he conquered huge chunks of central Asia and China. His descendents expanded the empire even further, advancing to such far-off places as Poland, Vietnam, Syria and Korea. At their peak, the Mongols controlled between 11 and 12 million contiguous square miles, an area about the size of Africa. Many people were slaughtered in the course.