Heian Years

Before the Heian period, the army in Japan was modeled after the Chinese army and under the direct command of the emperor. Except for slaves, every able-bodied man had the duty of enrolling into the army. These men had to supply themselves, and many gave up returning and settled down on their way home. This was treated as a part of taxation and it could be substituted with other forms of tax such as bolts of cloth. These men were called Sakimori, lit. defenders but they are not related to samurai.

In the early Heian, the late 8th and early 9th centuries, Emperor Kammu sought to consolidate and expand his rule in northern Honshu. The armies he sent to conquer the rebellious Emishi lacked motivation and discipline and were unable to prevail. He then introduced the title of Seiitaishogun or shogun and began to rely on the powerful regional clans to conquer the Emishi. Skilled in mounted combat and archery, these clan warriors became the emperor's preferred tool for putting down rebellions. Even though they may have been educated, the Imperial court officials considered 7th to 9th century warriors to be crude and barbaric.

During the Heian period, the emperor's army was disbanded and the emperor's power gradually declined. While the emperor was still the ruler, powerful clans around Kyoto assumed positions of ministers and their relatives bought their positions of magistrates to collect taxes. To repay their debts and amass wealth, they often imposed heavy taxes and many farmers were forced to leave their lands. Regional clans grew powerful by offering lower taxes to their subjects as well as freedom from conscription. These clans armed themselves to repel other clans and magistrates from collecting taxes. They would eventually form themselves into armed parties and became samurai.

The samurai came from guards of the imperial palace and private guards clans employed. They also acted as a police force in and around Kyoto. These forerunners of what we now know as samurai had ruler-sponsored equipment and were required to hone their martial skills. They were saburai, servants, yet their advantage of being the sole armed party increasingly became apparent. By promising protection and gaining political clout through political marriages they amassed power, eventually surpassing the ruling aristocrats.

Some clans originally were farmers that had been driven to arms to protect themselves from the imperially appointed magistrates sent to govern their lands and collect taxes. These clans formed alliances to protect themselves against more powerful clans. By the mid-Heian, they had adopted Japanese-style armor and weapons and laid the foundation of bushido, their famous ethical code.

Kamakura Bakufu and the Rise of Samurai