The katana is a type of Japanese sword, also commonly referred to as a "samurai sword". In general, the word katana in Japanese is applied to any kind of single-edged sword, of any origin. Contrary to common belief, outside Japan, katana doesn't necessarily have to mean a Japanese sword. But incorrectly or habitually, some Japanese and Western sword enthusiasts define katana as the standard size, curved (as opposed to the older "tachi" style featuring more curvature) Japanese sword with a blade length of more than 60 cm (23.6 inches).
Usage by the Japanese
The Katana is the army knife of high ranking Japanese Officers. They are seen being held by the Japanese in the front line when the Japanese can't give the victory anymore.
- The sword, along with the Nambu is so valuable to Marines that they will literally do anything just to obtain one.
- It is the only sword featured in the series.