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  2. List of Device Forts - Wikipedia

    en.wikipedia.org/wiki/List_of_Device_Forts

    The Device Forts, also known as Henrician castles and blockhouses, were a series of artillery fortifications built to defend the coast of England and Wales by Henry VIII. [ 2 ] [ a ] They ranged from large stone castles , to small blockhouses and earthwork bulwarks . [ 4 ]

  3. Device Forts - Wikipedia

    en.wikipedia.org/wiki/Device_Forts

    The Device Forts, also known as Henrician castles and blockhouses, were a series of artillery fortifications built to defend the coast of England and Wales by Henry VIII. [a] Traditionally, the Crown had left coastal defences in the hands of local lords and communities but the threat of French and Spanish invasion led the King to issue an order, called a "device", for a major programme of work ...

  4. Bastion fort - Wikipedia

    en.wikipedia.org/wiki/Bastion_fort

    The structure of Fort Wood on Liberty Island in New York City, United States, was used for the foundation of the Statue of Liberty. In the nineteenth century, with the development of more powerful artillery and explosive shells, star forts were replaced by simpler but more robust polygonal forts. In the twentieth century, with the development ...

  5. Category:Artillery battery fortifications - Wikipedia

    en.wikipedia.org/wiki/Category:Artillery_battery...

    Artillery battery fortifications in the United States (1 C, 14 P) Pages in category "Artillery battery fortifications" The following 18 pages are in this category, out of 18 total.

  6. Coast Artillery fire control system - Wikipedia

    en.wikipedia.org/wiki/Coast_Artillery_Fire...

    Several of the common corrections depended on meteorological data. For this reason, each Coast Artillery fort or fire command maintained its own meteorological station which transmitted an hourly meteorological message [14] to the entire command whenever firing was anticipated. This message included a series of five- and seven-digit data blocks ...

  7. Fortress Study Group - Wikipedia

    en.wikipedia.org/wiki/Fortress_Study_Group

    Landguard Fort, Felixstowe, showing different era’s artillery fortifications. The Fortress Study Group was formed in June 1975 at Pembroke College, Oxford amongst the founders were Jock Hamilton-Baillie, who became chairman in 1976, the late Quentin Hughes was the founding editor of the annual journal, and his Royal Highness the Duke of Gloucester remains as patron.

  8. Reverse slope defence - Wikipedia

    en.wikipedia.org/wiki/Reverse_slope_defence

    Operation Alberich involved the construction, through the late winter of 1917, of a new and shorter line (the Hindenburg Line) of defensive fortifications along a high ridge using reverse slope techniques, with massive artillery gun placements protected to the rear by the topography of the ridge, followed by a strategic retreat from their ...

  9. Twydall Profile - Wikipedia

    en.wikipedia.org/wiki/Twydall_Profile

    In the study of fortification, the term "profile" means the form of a defensive structure when viewed as a cross section in the vertical plane. [4] The Twydall Profile consists of a simple earthen rampart, built as low as possible; between 10 and 15 feet (3.0 and 4.6 metres) and not greater than 20 feet (6.1 metres) was recommended.