Browsing named entities in H. Wager Halleck , A. M. , Lieut. of Engineers, U. S. Army ., Elements of Military Art and Science; or, Course of Instruction in Strategy, Fortification, Tactis of Battles &c., Embracing the Duties of Staff, Infantry, Cavalry, Artillery and Engineers. Adapted to the Use of Volunteers and Militia.. You can also browse the collection for Portsmouth, Va. (Virginia, United States) or search for Portsmouth, Va. (Virginia, United States) in all documents.

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H. Wager Halleck , A. M. , Lieut. of Engineers, U. S. Army ., Elements of Military Art and Science; or, Course of Instruction in Strategy, Fortification, Tactis of Battles &c., Embracing the Duties of Staff, Infantry, Cavalry, Artillery and Engineers. Adapted to the Use of Volunteers and Militia., Chapter 7: sea-coast defences..—Brief description of our maritime fortifications, with an Examination of the several Contests that have taken place between ships and forts, including the attack on San Juan d'ulloa, and on St. Jean d'acre (search)
othing has yet been done to these works. Next Portland, with works carrying about forty or fifty guns, and Fort Penobscot and batteries, carrying about one hundred and fifty guns. These are only partly built. New Hampshire. Defenses of Portsmouth and the vicinity, about two hundred guns. These works are also only partly built. Massachusetts. Projected works east of Boston, carrying about sixty guns These are not yet commenced. Works for defence of Boston Harbor carry about fivestill more uncertain chance of keeping him there; the escape of a single vessel being sufficient to cause the loss of our harbor.” These remarks are based upon the supposition that we have but the single harbor of New York; whereas Portland, Portsmouth, Boston, Newport, the Delaware, the Chesapeake, Charleston, Savannah, Pensacola, Mobile, New Orleans, and numerous other places, are equally open to attack, and therefore must be equally defended, for we know not to which the enemy will direct