Elements of Tacticks,: and Introduction to Military Evolutions for the Infantry: by a celebrated Prussian General, with Plates. Translated from the original in German, by I[saac] Landmann, Professor of Fortification and Artillery to The Royal Military Academy at Woolwich.

THE LEADING PRUSSIAN TACTICIAN - HIGHLY INFLUENTIAL ON THE BRITISH ARMY
first edition in English tall 8vo. xvi, 334, [2 (errata & blank)]pp., 18 folding plates, contemporary bold tree calf, smooth spine panelled by double gilt fillets and with a maroon title label gilt, without the terminal advertisement leaf (as often), fine copy. Uncommon, especially so in such attractive condition.
Inscribed at head of title page "Jon: Chetwood Captain/ Royal Queens County Militia/ Nov 14th 1793" with neat corrections in his hand scattered throughout.
ESTC t113849 locates in 6 U.K. and 2 N. American libraries only (a few with duplicate copies, and many without the advertisement leaf at the end).
"Von Saldern (1719-85) was an outstanding Prussian tactician who later turned to writing, von Saldern was of great importance in spreading Prussian tactical ideas through the armies of late eighteenth-century Europe. Having entered the army of Frederick William I (1713-40) as an ensign, at the age of sixteen, he first attracted royal attention on account of his great height. Subsequently, his distinguished service during the Seven Years' War (1756-63) secured rapid promotion to the rank of major-general. Frederick the Great considered his tactical ability to be without equal and, from 1763 until his death in 1785, he served as Inspector-General for the Magdeburg Infantry Inspection. His published thoughts on tactics Taktik der Infanterie (1784) and Taktische Grundsätz (1786) though in part criticized as impractical, were soon translated (into English in 1787). In Britain, his evolutions were copied directly by some regiments and his thoughts were influential in the formulation of the British tactical Rules and Regulations of 1792, the adoption of which was seen by many contemporaries as finally making complete the Prussianization of the British service" [Blackwell Reference Online].
Jonathan Cope Chetwood (1757-1839) succeeded to his father Valentine's Queen's County (now Laois) estate of Woodbrook in 1771. In early life Jonathan had spent some time in the army and on retiring from it resided at Woodbrook. He played a prominent part in the county as Major of the Militia, High Sheriff and Deputy Governor. He was M.P. for Downpatrick in the Irish Parliament 1790-97. After a fire partially destroyed Woodbrook he rebuilt it in 1815. Swift was connected to the house and probably wrote part of Gulliver's Travels there.