In previous "Keen Sword" joint military exercises, Japan and the U. S. once conducted drills on JSDF's "rear support" to the U. S. army based on the Perimeter Situation Law.

在此前的“利剑”军演中，日美曾基于《周边事态法》实施过日本自卫队对美进行“后方支援”的演习。

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Napoleon was so happy to have such a keen supporter that Nicholas Chauvin was given a ceremonial sword and a cash prize.

拿破仑十分高兴有这样狂热的支持者，便赏赐给Nicholas Chauvin一把仪式用剑，还有一些奖金。

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His sword was long, his lance was keen.

长兮其剑，锐兮其矛。

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At least 47, 000 personnel will take part in the biennial Keen Sword exercise, which runs until 16 November.

BBC: US and Japan begin military drills amid China tension

The joint military exercises - codenamed Keen Sword - are being held to mark the 50th anniversary of the US-Japan alliance.

BBC: US-Japan naval drills start as N Korea tensions rise