大だい作さく戦せん

noun

large-scale operation; major campaign; big mission

Used for ambitious, wide-ranging plans, often with a dramatic or strategic tone. Common in military, business, and event contexts.

• 警けい察さつは麻ま薬やく組そ織しきの摘てき発はつに向むけて大だい作さく戦せんを展てん開かいした。

  The police launched a large-scale operation to crack down on the drug ring.

• 新しん商しょう品ひんの販はん売ばい促そく進しんのため、会かい社しゃは全ぜん国こく的てきな大だい作さく戦せんを計けい画かくしている。

  The company is planning a nationwide campaign to promote the new product.