Stor._ vol.xv.
pp.

377 to 453.

Machiavelli's treatise _De re militari_, or _I libri sull' arte della guerra_, was the work of his later life; it was published in 1521 at Florence.
[3] Though Machiavelli deserves the credit of this military system, the part of Antonio Giacomini in carrying it into effect must not be forgotten.

Pitti, in his 'Life of Giacomini' (_Arch.

Stor._ vol.iv.