claymore (mine)
A remote-detonated directional anti-personnel mine. It operates by detonating a layer of explosive material behind several hundred steel balls, creating a shotgun effect in the direction it is aimed. The most common form is the M18A1 used by the U.S. military.
Recognizable features of the Claymore mine are its shape that resembles kanji 只 and "FRONT TOWARD ENEMY" inscription.