Trattato Di Scientia d'Arme, con un Dialogo di Filosofia

An instructional and theoretical treatise on fencing.

In his Treatise on the Science of Arms with Philosophical Dialogue (published in 1553), he proposed dramatic changes in the way swordsmanship was practised at the time. For instance, he pointed out the effectiveness of holding the sword in front of the body instead of behind it. - Wikipedia