The Prussian evolutions in actual engagements : both in platoons, sub, and grand-divisions; : explaining, all the different evolutions, and manoeuvres, in firing, standing, advancing, and retreating, which were exhibitted [as printed] before his present Majesty, May 8, 1769; and before John Duke of Argyle, on the links of Leith, near Edenburgh, in 1771. : With some additions, since that time, explained with thirty folio copper-plates. : To which is added, the Prussian manual exercise: also the theory and some practices of gunnery. /