This enables the head and upper torso to be removed away from the line of fire. 这就能使射手的头部和上身离开火线。
During the Meiji Restoration, the Tokugawa shogunate's campaign to attack government troops of the soldiers singing the song that washed up on the line of fire. 明治维新期间，攻打德川幕府的战役，政府军的战士们就是唱着这首歌冲上火线。
