An essay on field fortification [electronic resource] : intended principally for the use of officers of infantry. Shewing how to trace out on the ground, and construct in the easiest Manner, all sorts of redouts and other field works; Also, To put into a proper State of Defense, Posts of different kinds, such as Churches, Church-Yards, old Castles, Villages, small and large Towns, &c. With Forty Copper-Plates. Translated from the original manuscript of an officer of experience in the Prussian service, by J. C. Pleydell, Lieutenant in the Twelfth Regiment of Foot.