Written between 1519 and 1520 and published the following year, it was Machiavelli's only historical or political work printed during his lifetime, though he was appointed official historian of Florence in 1520 and entrusted with minor civil duties.
The Art of War is divided into a preface (proemio) and seven books (chapters), which take the form of a series of dialogues that take place in the Orti Oricellari, the gardens built in a classical style by Bernardo Rucellai in the 1490s for Florentine aristocrats and humanists to engage in discussion, between Cosimo Rucellai and "Lord Fabrizio Colonna" (many feel Colonna is a veiled disguise for Machiavelli himself, but this view has been challenged by scholars such as Mansfield[1]), with other patrizi and captains of the recent Florentine republic: Zanobi Buondelmonti, Battista della Palla and Luigi Alamanni.
Machiavelli had served for fourteen years as secretary to the Chancery of Florence and "personally observed and reported back to his government on the size, composition, weaponry, morale, and logistical capabilities of the most effective militaries of his day.
In addition Machiavelli was not writing in a vacuum; Art of War was written as a practical proposition to the rulers of Florence as an alternative to the unreliable condottieri mercenaries upon which all the Italian city states were reliant.
However, his basic notion of emulating Roman practices was slowly and pragmatically adapted by many later rulers and commanders, most notably Maurice of Nassau[4] and Gustavus Adolphus of Sweden.
In the eighteenth century, the Marshal de Saxe leaned heavily on him when he composed his Reveries upon the Art of War (1757), and Algarotti—though without much basis—saw in Machiavelli the master who has taught Frederick the Great the tactics by which he astounded Europe.
"[6] This continued interest in Machiavelli as a military thinker was not only caused by the fame of his name; some of the recommendations made in the Art of War—those on training, discipline, and classification, for instance—gained increasing practical importance in early modern Europe when armies came to be composed of professionals coming from the most different social strata.
This does not mean that the progress of military art in the sixteenth century—in drilling, in dividing an army into distinct units, in planning and organizing campaigns—was due to the influence of Machiavelli.
Moreover, in the sixteenth century, with its wide knowledge of ancient literature and its deep respect for classical wisdom, it was commonly held that the Romans owed their military triumphs to their emphasis on discipline and training.