Excuse me, who knows and introduces the Japanese army knife in World War II in detail?

Command knife, just for command, basically has no stab value. Shancheng, a famous Japanese mountain city, is a kind of knife created by imitating China and tangdao. Beautiful appearance, in line with human mechanics. It is very powerful. Japanese command knives are basically that shape, but they lack the value of thorns. Bayonets, Japanese bayonets are often specially made and can basically be used as spears. China's bayonet is modeled after Japan's, while Europe's bayonet is often a dagger attached to the gun head, so the Japanese often win the battle. Generally, it is a triangular bayonet with two blood grooves to prevent blood spatter from affecting vision. The triangular bayonet can avoid the situation that it is difficult to pull out the dagger due to different internal and external pressures (it is difficult to pull out the dagger deeply), forming a triangular wound with less contact between wounds, resulting in slow wound healing. Moreover, triangular wounds lead to a large influx of air, forming blood foam, bleeding and dying soon.