先せん陣じん

noun

vanguard; advance guard

Refers to the foremost unit in a military advance, or metaphorically to those leading a movement or endeavor.

• 先せん陣じんを切きって敵てき陣じんに突とつ入にゅうした。

  They led the charge and broke into the enemy camp.

• 彼かれは新しん事じ業ぎょう