Bookeater recently asked when Sun Zi's Art of War was first adopted outside China. However, Sun Zi was not the only author who wrote a treatise on this topic. Machiavelli wrote Dell'arte della guerra / The Art of War around 1519-1520 and it was the only of his theoretical works that was printed during his lifetime.
My question is a bit like the reverse of Bookeater's question: When was Machiavelli's treatise The Art of War first translated into Chinese? A simple web search did not help; I find mostly links about translations of Sun Zi's treatise ... Doing a search for 翻译 (the Chinese word for "translation") on the Chinese Wikipedia article about Machiavelli gives no results. A search in Chinese brings up pages that I can't read with my basic level of Chinese.