The Art of War is a Chinese military treatise that was written by Sun Tzu in the 6th century BC, Composed of 13 chapters, each of which is devoted to one aspect of warfare, it is said to be the definitive work on military strategies and tactics of its time, and still one of the basic texts. The book was translated into the French language in 1772 by French Jesuit Jean Joseph Marie Amiot, and into English by British officer Everard Ferguson Calthrop in 1905. After the movable type printer was invented, The Art of War (with Cao Cao's annotations) was published as a military text book, known as Seven Military Classics.