Roberto Valturio (1405–1475) was an Italian engineer and writer born in Rimini. He was the author of the military treatise De Re militari (1472).^[1] The work consists of a preface, with a dedication to Sigismondo Pandolfo Malatesta; a list of the classical works mentioned and an introduction on the history of warfare. The work was widely known: King Louis XI of France, King Matthias Corvinus of Hungary, Duke of Urbino Federico da Montefeltro and the ruler of Florence Lorenzo de' Medici had a copy of the printed book. In Leonardo da Vinci's list of books Roberto Valturio has been mentioned. This indicates that Leonardo had been in the possession of Roberto's work.^[2]

• Pia F. Cuneo Artful Armies, Beautiful Battles: Art and Warfare in Early Modern Europe BRILL, 2002 ISBN 90-04-11588-9 ISBN 9789004115880

• Roberto Valturio. De Re Militari. Italy, third quarter of the 15th century [182+] 1., the last blank. illus. 34 cm. From the Rare Book and Special Collections Division at the Library of Congress
• Roberto Valturio. De Re Militari. [North Italy, third quarter of the 15th century] [208] 1., the last 2 blank. illus. 30 cm. From the Rare Book and Special Collections Division at the Library of Congress