群ぐん羊ようを駆かって猛もう虎こを攻せむ

expression, godan verb (-mu)

group together against a stronger enemy

Idiomatic expression meaning to unite forces to attack a powerful opponent, like a flock of sheep driving a fierce tiger.

• 弱じゃく小しょう国こくが群ぐん羊ようを駆かって猛もう虎こを攻せむ戦せん略りゃくを取とった。

  The small nations adopted a strategy of grouping together against the stronger enemy.