軍ぐん事じ攻こう勢せい

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Meanings

1

noun

military offensive

Refers to a large-scale, organized military attack or campaign.

army, force, troops

事matter, thing, fact

攻aggression, attack, criticize

勢forces, energy, military strength

攻こう勢せい
攻勢 is a general 'offensive', while 軍事攻勢 specifically denotes a military one.
軍ぐん事じ作さく戦せん
軍事作戦 is a broader term for 'military operation', which may include offensives, defenses, and other actions.

Compound of 軍事 (military affairs) and 攻勢 (offensive).