前ぜん進しん部ぶ隊たい

noun

advance troops; advance unit

Military term for a unit that moves ahead of the main force, often for reconnaissance or to secure a position.

• 前ぜん進しん部ぶ隊たいが敵てき陣じんの偵てい察さつに向むかった。

  The advance troops went to scout the enemy position.