Rokkaku

Rokkaku is a type of Japanese armor, specifically a type of cuirass or torso armor. The name "rokkaku" translates to "six-sided" and refers to the characteristic hexagonal plates that make up its construction. These plates, known as kozane, are typically made of lacquered iron or leather and are laced together with silk or leather cords. This lacing method, called odoshi, is a crucial element in the armor's flexibility and strength.

The rokkaku armor was most commonly used during the Sengoku period (Warring States period) of Japan, from the 15th to the early 17th centuries. It was a popular choice for samurai and ashigaru (foot soldiers) due to its effectiveness in protecting the torso while allowing for a good range of motion. The hexagonal plates distribute impact effectively, and the overlapping nature of the kozane prevents direct penetration.

While the rokkaku design is similar to other Japanese lamellar armors like the o-yoroi and do-maru, its distinctive hexagonal plates set it apart. The arrangement of these plates, often in horizontal rows, contributed to its distinctive appearance. Over time, variations in the size, shape, and lacing of the kozane evolved, leading to different styles of rokkaku armor. The craftsmanship involved in creating rokkaku armor was highly valued, with intricate lacing patterns and decorative elements often incorporated into its design. Today, rokkaku armor is a significant artifact for understanding Japanese military history and the evolution of samurai warfare.