History of the Samurai

By 200 AD, rice cultivation had been known on the islands east of the Asian continent for 500 years. With agriculture had come ownership of land where previously, boundaries between small nomadic hunting groups had been indistinct. People came to live together in communities, sharing in the work of planting and harvesting, and in defense against others who would take their winter stores. With the possession of land had come war.The growth of farming drew people away from hunting and away from hunting skills. Some were naturally better suited to fighting then others and so honed those skills, becoming specialists at fighting. Those who fought became warriors, and by virtue of their strength, became the leaders of their clans. The wars they fought resulted in larger clans overcoming and absorbing smaller ones. Japanese society of the third century was composed of many clans, capable and willing to wage war for advantage. It would not be very long before they became one society.By 200 AD, the Chinese Han court had received envoys from as many as 30 clans from northern Kyushu through their offices on the Korean peninsula. The ancestors of the Japanese had much more reason to look west than to the northern wilderness since the west held much to attract them in both materials and technology.
Korean iron and weapons were particularly desirable. Shortly after the fall of the Han in 220 AD, Kyushu clans, capable and willing to wage war for advantage, attacked.Warriors of this era fought on foot with bows, stabbing swords, and spears. Armor was worn, but most warriors probably had only shields. Steel and bronze had come to the Japanese islands with rice and so they knew of and used these materials. The more advanced technology and the better materials, however, were still from the continent.By 300 AD the religious, political, and military consolidation of independent clans culminated with the Yamato clan becoming dominant. Included in the consolidation were clans on northern Kyushu and southern Honshu. The Yamato were in power because of the support of many clans rather than the surrender of those clans. The Yamato culturally consolidated early Japanese society; administratively, many local clans remained relatively independent. Archeological excavations show that mound tombs constructed in this time were all very similar and yet widely distributed. They demonstrate the cultural unity of the people, the independence of distributed clans, and the measure of their power over the lower classes. Yamato invasions of the Korean peninsula were frequent, leading even to the establishment a land hold.
The tip of the peninsula, called Mimana, long under the influence of the islanders, was established as their own domain and base for raids in the fourth century. From this presence, the flow of culture and technology was assured. War with the continentals was not always a matched fight, however. Shortly after 400 AD, the enemy demonstrated that they had learned to fight from horseback. Up until that time, horses, though available, had not been ridden in war by the Yamato. Shooting an arrow from horseback required two hands. Until the invention of stirrups in China in the first century, falling off one's horse was a much more likely event than successfully launching a home hitting arrow. With stirrups providing two sided support and a saddle to brace one's knees, a warrior could stand, use his feet to guide the horse, shoot arrows, and swing a sword. With the additional speed offered by a mount, foot soldiers could be easily surprised and devastated by many fewer men. The Yamato participated in politics and culture on the Korean peninsula directly. Alliances were made and war waged. Even marriages were arranged between courts.