AELIANUS, Tacticus. De militaribus ordinibus instituendis. Venice: Andreas and Jacobus Spinellus, 1552. 4o. Title within woodcut border, woodcut diagrams of troop formations including one folding. (Light dampstaining to title and first few leaves, lacks blank K4.) 18th-century half-sheep (some wear to spine and edges). Provenance: Empress Catherine II of Russia (with later shelf label [chipped] at foot of spine). FIRST EDITION, of this translation. Adams A-217.