Translation guide
Expressing a military or surprise attack that occurs at night. The most common Japanese equivalent is 夜襲 (yashū), but other terms exist depending on context, formality, and nuance.
A planned military assault carried out during the night.
An attack that relies on the cover of darkness for surprise, not necessarily in a formal military context.
A phrase meaning 'to attack under cover of darkness'. Emphasizes the stealthy aspect.
彼らは夜陰に乗じて攻撃する計画を立てた。
They planned to attack under cover of darkness.
夜襲 is the modern, general term for a night attack, while 夜討ち is archaic and strongly associated with historical samurai tales. Use 夜襲 unless you are specifically referencing pre-modern warfare.
Avoid directly translating 'night attack' as 夜の攻撃 (yoru no kōgeki). While grammatically correct, it sounds unnatural and is not the standard term.
The enemy forces launched a night attack.
夜襲に備えて警戒を強化した。
We strengthened our guard in preparation for a night attack.
Historically refers to a night attack, often in the context of samurai warfare or vendettas. Carries a more traditional or literary nuance.
彼らは夜討ちをかけて敵の城を攻めた。
They launched a night attack and assaulted the enemy castle.
Literally 'night battle' or 'night combat'. Used more broadly for any fighting at night, not necessarily a surprise attack.
夜戦の訓練を行う。
We conduct night combat training.
Also used for surprise night attacks outside strict military contexts, though it retains a somewhat formal tone.
夜襲で敵の補給線を断った。
They cut the enemy's supply lines with a night attack.