合ごう同どう軍ぐん

noun

combined armies; joint forces

Refers to military forces from different units or nations operating together. Often used in historical or strategic contexts.

• 連れん合ごう国こくは合ごう同どう軍ぐんを編へん成せいして敵てきに立たち向むかった。

  The Allied powers formed a combined army and confronted the enemy.