| The first proofs of the existence of samurai | | | | occurred the habit of signing on the sword blades, |
| swords in Japan date from 240 BC, during the | | | | therefore probably, the oldest tachi sword bears |
| Yayoi period, when the queen Himeko sent a | | | | the signature of its manufacturer: Sanjo |
| tribute to the Chinese dynasty Wei, two swords. | | | | Munechika, and the oldest Japanese sword which |
| In the same time, in 280 BC, they imported | | | | was signed, and which also bears the date of its |
| numerous iron swords from China. It is supposed | | | | manufacturing, was made by Namihira Yukimasa. |
| that the art of forging the steel came | | | | The defeat of the Taira clan by Minamoto no |
| immediately after that from China, through Korea, | | | | Yoritomo was the event which marks the |
| but the details are still unknown. | | | | beginning of the period Kamakura, but in the |
| In the 5th century the first samurai katana sword | | | | same time, it is the event which marks the taking |
| appeared on a major scale. They were straight | | | | over of the power by the samurai warrior class. |
| and they were called chokuto. The method of | | | | It is said that this is the golden period of the |
| hardening the steel, very specific in Japan, as far | | | | Japanese swords, and they became better and |
| as the manufacturing of the swords is concerned, | | | | better from all the points of view, including the |
| was used for the first time in the 6th century. | | | | aesthetic one. A characteristic of the swords |
| The period of the straight swords lasted until the | | | | belonging to that period is the width of the blade - |
| beginning of the Heian period (the 8th century), | | | | bigger that in the previous period, a small |
| when the fighting style changed, and the fight on | | | | difference between the width of the blade at its |
| horseback became predominant. In order to cope | | | | base and at its end, and the shape of its end, |
| the use of swords with horse riding, they became | | | | which most of the times belonged to the ikubi |
| curve, longer, having a single blade, too, being | | | | type(which means ,,bull nape"). |
| called tachi. Between chokuto and tachi there are | | | | Towards the end of the Kamakura period, two |
| more intermediary styles, the most popular being | | | | Mongol invasions took place (1274 and 1281). The |
| kogarasumaru (short sword, having two sharp | | | | discovery of new samurai weapons, technologies |
| edges) and kenukigatatachi. The term Nipponto or | | | | and strategies, proved some weak points of the |
| Nihonto (which means "Japanese sword") refers | | | | tachi swords, for example the fact that the end |
| to curve swords. | | | | of the blade could be easily broken and it couldn't |
| Heian period, which is considered the starting point | | | | be repaired. These experiences accumulated |
| of the history of Japanese swords, is | | | | during the battles, affected the future design of |
| characterized by the fact that many ideologies | | | | the swords. |
| were imported from China and they were | | | | When the power of the Kamakura shogunate |
| modified so that they become Japanese. Most of | | | | dropped down, the imperial court took the |
| the things which we consider nowadays specific | | | | leadership over again, but for a short time - at |
| to Japan, appeared during this period. During this | | | | the beginning of the Muromachi period. |
| period, too, appeared the idea of manufacturing | | | | This period is characterized by an almost |
| swords by smithing, so that the outer surface | | | | continuous war. The historic conditions determined |
| was rough and the core was soft. | | | | in this case the growing in importance of the foot |
| The folded steel samurai swords manufactured | | | | soldier, and in the same time the occurrence of |
| and used during this period belong to the class | | | | long swords, for both hands, used for powerful, |
| tachi. In the same time, during this period | | | | devastating strikes. |