take up arms 武器を手にする、戦闘を始める。6:53 today it's not just an improved military ready to fight, civilians have been training and taking up arms committed to defending their country. 愛国心がより強固になったウクライナでは、戦闘準備の整った近代的な軍隊であるばかりではなく、一般市民も国を守るために武器を手に取り訓練に励んでいる。
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4:40 but the cruel loss of his brother, he says, inspired him to take up arms. 弟の残酷な処刑は彼を（北朝鮮への）戦闘へと奮い立たせた。
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0:56 the Templars took up arms against my army.テンプル騎士団は私の軍に戦いを挑んできた。
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