枕ㄓㄣˋzhèn戈ㄍㄜgē待ㄉㄞˋdài旦ㄉㄢˋdàn

枕著武器等待天明。形容時時警惕，準備作戰，不敢安睡。《晉書·卷六二·劉琨傳》：「吾枕戈待旦，志梟逆虜，常恐祖生先吾著鞭。」似常備不懈反醉生夢死

英to wait for dawn, one's head resting on a spear (idiom), fully prepared and biding one's time before the battle

德Gewehr bei Fuß stehen