DRUMMOND DE MELFORT, Louis Hector, Comte.- Traité sur la cavalerie.- A Paris: De l'Imprimerie de Guillaume Desprez, 1776.- XXII, [2], 505, [2, 1 br.] p.: 1 portada grav., 11 gravuras; 47 cm.- E. Original edition of the text volume (illustrated), of a renowned work on the theme of military cavalry (the lot does not include the atlas volume, in maximum folio format, published on the same date). The author (1721-1788) was a Cavalry officer in the French Army during the Seven Years' War (1756-1763) where the superiority of the Prussian Cavalry was evident, which is why he decided to publish this treatise, with the aim of reforming and reorganizing the French Cavalry. The volume, very lightly handled, but complete and clean, includes an allegorical title and 11 copperplate prints (eight on double sheets), as well as two large vignettes, one on the front and another at the end (21x17 cm), representing a formation of four battalions. Ex-libris of the Bibliothèque du Maréchal Jourdan. Contemporary binding, fully flecked sheepskin, slightly worn. Mennessier de La Lance, I, p. 408/409.