Over the last few decades, there has been in the west a strong interest for ancient Chinese texts in military strategy such as the Art of War by Sun Tzu and the Thirty-six Stratagems. In particular, concrete applications of the concepts enunciated in these texts have been found not only in modern warfare but also in corporate strategy. However, one ancient historical text little known in the west is of equal or greater relevance to ancient Chinese strategy: The Commentary of Zuo. In this paper, we demonstrate the importance of this text through a contextual analysis involving each of the thirty-six stratagems. Examples are provided.:欧米では、この数十年間「孫子兵法」や「三十六計」等、古代中国の兵法に注目が集まっている。特に、その文献に記載される概念は戦術だけではなく企業の戦略にも応用されてきた。しかし、同じく重要な古代中国の兵法である古典「左伝」は欧米ではあまり知られていない。本稿は「左伝」の重要性を示すため、三十六計との関連分析を行い事例も記述する