Like the knights following the code of chivalry, Samurai followed their own code, called Bushido. They often had shaved hairlines in order to make wearing a helmet more comfortable during battle. Samurai swords were often tested on prisoners and were also named. The Samurai treasured their swords like nothing else. A samurai was highly literate and well educated. As for protection, their armour was designed in such a way that allowed them to be as agile yet protected as possible. If a surprise attack were to occur, they needed to be able to maneuver quickly.