A fortification (also called a fort , fortress , fastness , or stronghold ) is a military construction designed for the defense of territories in warfare , and is used to establish rule in a region during peacetime . The term is derived from Latin fortis ("strong") and facere ("to make").
117-642: Martello towers , sometimes known simply as Martellos , are small defensive forts that were built across the British Empire during the 19th century, from the time of the French Revolutionary Wars onwards. Most were coastal forts . They stand up to 40 feet (12 m) high (with two floors) and typically had a garrison of one officer and 15–25 men. Their round structure and thick walls of solid masonry made them resistant to cannon fire, while their height made them an ideal platform for
234-401: A casemate on the first floor, which was divided into several rooms and had fireplaces built into the walls for cooking and heating. The officer and men lived in separate rooms of almost equal size. A well or cistern within the fort supplied the garrison with water. An internal drainage system linked to the roof enabled rainwater to refill the cistern. During the first half of the 19th century,
351-430: A ravelin like angular gun platform screening one of the curtain walls which is protected from flanking fire from the towers of the main part of the fort. Another example is the fortifications of Rhodes which were frozen in 1522 so that Rhodes is the only European walled town that still shows the transition between the classical medieval fortification and the modern ones. A manual about the construction of fortification
468-469: A warship is referred to as a magazine or the "ship's magazine" by sailors. Historically, when artillery was fired with gunpowder , a warship's magazines were built below the water line—especially since the magazines could then be readily flooded in case of fire or other dangerous emergencies on board the ship. An open flame was never allowed inside the magazine. More modern warships use semi-automated or automated ammunition hoists . The path through which
585-469: A Captain Ford. The northernmost tower at Aldeburgh is of quatrefoil design, i.e. four in one. and there are two towers at Clacton-on-Sea, one near the town and the other to the west near the local Golf Course (see the pictures on the right). Included in the scheme were three much larger circular forts or redoubts that were constructed at Harwich , Dymchurch and Eastbourne ; they acted as supply depots for
702-574: A concrete lighthouse at Maughers Beach. Another Martello tower stood on Georges Island . Four Martello towers were built at Kingston, Ontario to defend its harbour and naval shipyards in response to the Oregon Crisis . Their builders intended for the towers to serve as redoubts against marine attacks. Murney Tower and the tower at Point Frederick (at the Royal Military College of Canada ) are now museums that are open during
819-424: A designated place would be used to shelter the ready ammunition. In the case of batteries of towed artillery the temporary magazine would be placed, if possible, in a pit, or natural declivity, or surrounded by sandbags or earthworks . Circumstances might require the establishment of multiple field magazines so that one lucky hit or accident would not disable the entire battery. The ammunition storage area aboard
936-521: A double wall of trenches and ramparts, and in the Congo forests concealed ditches and paths, along with the main works, often bristled with rows of sharpened stakes. Inner defenses were laid out to blunt an enemy penetration with a maze of defensive walls allowing for entrapment and crossfire on opposing forces. A military tactic of the Ashanti was to create powerful log stockades at key points. This
1053-657: A medical student but later to become famous in Irish history as a surgeon, politician and writer. In Ulysses , the fictional character Stephen Dedalus lives in the tower with a medical student, Malachi "Buck" Mulligan, whom Joyce based on Gogarty. The James Joyce Tower , as the tower is now known, houses a museum dedicated to Joyce. A number of other Martello towers are extant nearby at Bullock Harbour , Dalkey Island , Williamstown , Seapoint and Sandymount and Martello towers feature in many literary works set in Dublin . During
1170-577: A military camp or constructing a fortification traditionally has been called castrametation since the time of the Roman legions . Laying siege to a fortification and of destroying it is commonly called siegecraft or siege warfare and is formally known as poliorcetics . In some texts, this latter term also applies to the art of building a fortification. Fortification is usually divided into two branches: permanent fortification and field fortification. Permanent fortifications are erected at leisure, with all
1287-633: A mixture of various types of missiles: surface-to-air missiles , antisubmarine missiles such as the ASROC missile , and anti-ship missiles such as the Harpoon missile . See especially the Oliver Hazard Perry -class frigates , owned by several different navies around the world, in which one 40-missile magazine carries a mixture of all three types of missiles: surface-to-air, surface-to-surface, and surface-to-underwater. In aircraft carriers ,
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#17327733773991404-521: A pivot (sometimes a converted cannon) for a cannon that would traverse a 360° arc. (Some towers were designed to carry more than one gun, with each having a more limited arc of fire.) The walls had narrow slits for defensive musket fire. The interior of a classic British Martello tower consisted of two storeys (sometimes with an additional basement). The ground floor served as the magazine and storerooms, where ammunition, water, stores and provisions were kept. The garrison of 24 men and one officer lived in
1521-445: A place where large quantities of ammunition are stored for later distribution. This usage is less common. In the early history of tube artillery drawn by horses (and later by mechanized vehicles), ammunition was carried in separate unarmored wagons or vehicles. These soft-skinned vehicles were extremely vulnerable to enemy fire and to explosions caused by a weapons malfunction. Therefore, as part of setting up an artillery battery ,
1638-482: A redoubt and a powder magazine. Restored, it is now a National Heritage site. The Duke of York Martello Tower was built in 1798 at York Redoubt . Its lower level still stands, though it has been boarded up for conservation purposes. The Duke of Clarence Martello Tower stood on the Dartmouth shore. Sherbrooke Martello Tower stood opposite York Redoubt on McNabs Island ; it was demolished in 1944 and replaced by
1755-591: A result, very very few kotas still stand to this day. Notable kotas: During Muhammad 's era in Arabia, many tribes made use of fortifications. In the Battle of the Trench , the largely outnumbered defenders of Medina, mainly Muslims led by Islamic prophet Muhammad, dug a trench , which together with Medina's natural fortifications, rendered the confederate cavalry (consisting of horses and camels ) useless, locking
1872-589: A round fortress, part of a larger Genoese defence system, at Mortella (Myrtle) Point in Corsica . The designer was Giovan Giacomo Paleari Fratino (el Fratin), and the tower was completed in 1565. Since the 15th century, the Corsicans had built similar towers at strategic points around the island to protect coastal villages and shipping from North African pirates . The towers stood one or two storeys high and measured 12–15 m (39–49 ft) in diameter, with
1989-471: A series of straight lines creating the central fortified area that gives this style of fortification its name. Magazine (artillery) A magazine is an item or place within which ammunition or other explosive material is stored. The word is taken originally from the Arabic word makhāzin (مخازن), meaning "storehouses", via Italian and Middle French. The term is also used for an ammunition dump ,
2106-399: A single doorway five metres off the ground that one could access only via a ladder that the occupants could remove. Local villagers paid for the towers and watchmen, known as torregiani , who would signal the approach of unexpected ships by lighting a beacon fire on the tower's roof. The fire would alert the local defence forces to the threat. Although the pirate threat subsequently dwindled,
2223-467: A single heavy artillery piece, mounted on the flat roof and able to traverse, and hence fire, over a complete 360° circle. A few towers had moats or other batteries and works attached for extra defence. The Martello towers were used during the first half of the 19th century, but became obsolete with the introduction of powerful rifled artillery. Many have survived to the present day, often preserved as historic monuments. Martello towers were inspired by
2340-600: A single political entity, the United Kingdom of Great Britain and Ireland , from 1801 to 1922, spanning the time during which most Martello towers were erected (the initial scheme started under the previous entities of the Kingdom of Great Britain and Kingdom of Ireland ). Consequently, the Martello towers of Great Britain and Ireland can be considered to have been part of a single defensive system, designed to protect
2457-561: Is Borġ in-Nadur , where a bastion built in around 1500 BC was found. Exceptions were few—notably, ancient Sparta and ancient Rome did not have walls for a long time, choosing to rely on their militaries for defence instead. Initially, these fortifications were simple constructions of wood and earth, which were later replaced by mixed constructions of stones piled on top of each other without mortar . In ancient Greece , large stone walls had been built in Mycenaean Greece , such as
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#17327733773992574-428: Is another example of a Gaulish fortified settlement. The term casemate wall is used in the archaeology of Israel and the wider Near East , having the meaning of a double wall protecting a city or fortress, with transverse walls separating the space between the walls into chambers. These could be used as such, for storage or residential purposes, or could be filled with soil and rocks during siege in order to raise
2691-650: Is available. Three Martello towers were built in Scotland, the first on offshore rocks facing the Firth of Forth in 1807–1809 to defend Leith Harbour. The Tally Toor now lies land-locked within the eastern breakwater. Two towers were then built at Hackness and Crockness , near Longhope in Orkney. They were constructed between 1813 and 1815 to guard against the threat of French and American raiders attacking convoys assembling offshore. Historic Scotland now operates
2808-643: Is located in a residential area on the north side of the Upper City overlooking Lower Town. It is now used as an escape game tourist activity by The National Battlefields Commission. Halifax, Nova Scotia , had five towers, the oldest of which, the Prince of Wales Tower located in Point Pleasant Park , is the oldest Martello-style tower in North America. It was built in 1796 and was used as
2925-564: Is surrounded by a dry moat. The tower's purpose was to defend the Ferry Reach Channel and so impede any attack on St. George's Island from the main island of Bermuda, and attacking vessels from slipping through Castle Harbour and the channel between Ferry Reach and Coney Island . The main channel by which vessels reach most parts of Bermuda west of St. George's, including the Royal Naval Dockyard , on Ireland ,
3042-577: Is the construction of Roman forts in England and in other Roman territories where camps were set up with the intention of staying for some time, but not permanently. Castles are fortifications which are regarded as being distinct from the generic fort or fortress in that it describes a residence of a monarch or noble and commands a specific defensive territory. An example of this is the massive medieval castle of Carcassonne . Defensive fences for protecting humans and domestic animals against predators
3159-602: Is the highest building on Barbuda and serves as a daymark from land or sea. Today the fort is a popular location for weddings. The last Martello tower built in the British Empire is said to be that which composes a part of the larger Fort Denison , built on a small island, Pinchgut Island, in Sydney Harbour , New South Wales . It is the only Martello tower to have been built in Australia. Fortification of
3276-746: The British Raj are found in the mainland Indian subcontinent (modern day India , Pakistan , Bangladesh and Nepal ). "Fort" is the word used in India for all old fortifications. Numerous Indus Valley Civilization sites exhibit evidence of fortifications. By about 3500 BC, hundreds of small farming villages dotted the Indus floodplain. Many of these settlements had fortifications and planned streets. The stone and mud brick houses of Kot Diji were clustered behind massive stone flood dykes and defensive walls, for neighbouring communities bickered constantly about
3393-532: The Great Sound , Hamilton Harbour , The Flatts , Murray's Anchorage , and other important sites, carries them around the east ends of St. David's and St. George's Islands, where the coastal artillery was always most heavily concentrated. Two more Martello towers to protect the Dockyard were planned, but never built. The tower was restored in 2008 and an 18-pounder cannon brought from Fort St. Catherine
3510-453: The Harpoon missile and the Exocet missile . Naval magazines face considerable risk of detonation , especially in cases of attack, accident, or fire. Such detonations have sunk many warships and caused many other incidents. Battleships were highly armored to protect from external attack, but the strength of the construction aids to constrict and worsen the impact of internal explosions, as
3627-1205: The Maratha Empire . A large majority of forts in India are in North India. The most notable forts are the Red Fort at Old Delhi , the Red Fort at Agra , the Chittor Fort and Mehrangarh Fort in Rajasthan , the Ranthambhor Fort , Amer Fort and Jaisalmer Fort also in Rajasthan and Gwalior Fort in Madhya Pradesh . Arthashastra , the Indian treatise on military strategy describes six major types of forts differentiated by their major modes of defenses. Forts in Sri Lanka date back thousands of years, with many being built by Sri Lankan kings. These include several walled cities. With
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3744-586: The Mediterranean . The fortifications were continuously being expanded and improved. Around 600 BC, in Heuneburg , Germany, forts were constructed with a limestone foundation supported by a mudbrick wall approximately 4 metres tall, probably topped by a roofed walkway, thus reaching a total height of 6 metres. The wall was clad with lime plaster, regularly renewed. Towers protruded outwards from it. The Oppidum of Manching (German: Oppidum von Manching)
3861-569: The Napoleonic wars . Most of the colonial forts were garrisoned up until the early 20th century. The coastal forts had coastal artillery manned by the Ceylon Garrison Artillery during the two world wars. Most of these were abandoned by the military but retained civil administrative officers, while others retained military garrisons, which were more administrative than operational. Some were reoccupied by military units with
3978-580: The Nordic states and in Britain , the fortifications of Berwick-upon-Tweed and the harbour archipelago of Suomenlinna at Helsinki being fine examples. During the 18th century, it was found that the continuous enceinte , or main defensive enclosure of a bastion fortress, could not be made large enough to accommodate the enormous field armies which were increasingly being employed in Europe; neither could
4095-707: The Old City of Shanghai , Suzhou , Xi'an and the walled villages of Hong Kong . The famous walls of the Forbidden City in Beijing were established in the early 15th century by the Yongle Emperor . The Forbidden City made up the inner portion of the Beijing city fortifications . During the Spanish Era several forts and outposts were built throughout the archipelago. Most notable is Intramuros ,
4212-599: The Plains of Abraham , overlooking the St Lawrence River . It has been restored as a museum and can be visited during the summer months. Tower no. 2 stands close nearby and currently hosts activities for private groups. Tower No. 3 was demolished in 1905 after being used as a residence. The McKenzie Memorial Building of Jeffery Hale Hospital now occupies the site. The fourth surviving Martello Tower in Quebec, No. 4,
4329-618: The Siege of Ta'if in January 630, Muhammad ordered his followers to attack enemies who fled from the Battle of Hunayn and sought refuge in the fortress of Taif. The entire city of Kerma in Nubia (present day Sudan) was encompassed by fortified walls surrounded by a ditch. Archaeology has revealed various Bronze Age bastions and foundations constructed of stone together with either baked or unfired brick. The walls of Benin are described as
4446-634: The Tang dynasty (618–907 AD). The Great Wall of China had been built since the Qin dynasty (221–207 BC), although its present form was mostly an engineering feat and remodelling of the Ming dynasty (1368–1644 AD). In addition to the Great Wall, a number of Chinese cities also employed the use of defensive walls to defend their cities. Notable Chinese city walls include the city walls of Hangzhou , Nanjing ,
4563-828: The Theodosian Walls of Constantinople , together with partial remains elsewhere. These are mostly city gates, like the Porta Nigra in Trier or Newport Arch in Lincoln . Hadrian's Wall was built by the Roman Empire across the width of what is now northern England following a visit by Roman Emperor Hadrian (AD 76–138) in AD ;122. A number of forts dating from the Later Stone Age to
4680-620: The naval artillery 's ammunition passed typically has blast-resistant airlocks and other safety devices, including provisions to flood the compartment with seawater in an emergency. The separation of shell and propellant gave the storage of the former the name "shell room" and the latter "powder room". Surface warships that have carried torpedoes , and ones that still do (such as the Mark 46 torpedo for antisubmarine warfare ), have had torpedo magazines for carrying these dangerous antiship and antisubmarine weapons in well-defended compartments. With
4797-518: The 1980s, Bono owned the Martello tower in Bray , County Wicklow . Martello Tower South No.7, on Tara Hill, Killiney Bay, is unique, as is its location as an enfilading tower . The Tower is privately owned and has been fully restored, to include a proofed, working King George 3rd Blomefield 18-pounder cannon mounted on a traversing carriage on the crown of the Tower. There is a three-gun battery below
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4914-639: The 19th century led to another stage in the evolution of fortification. Star forts did not fare well against the effects of high explosives, and the intricate arrangements of bastions, flanking batteries and the carefully constructed lines of fire for the defending cannon could be rapidly disrupted by explosive shells. Steel -and- concrete fortifications were common during the 19th and early 20th centuries. The advances in modern warfare since World War I have made large-scale fortifications obsolete in most situations. Many United States Army installations are known as forts, although they are not always fortified. During
5031-564: The British government embarked on a large-scale programme of building Martello towers to guard the British and Irish coastlines. Around 140 were built, mostly along the south coast of England . Governments in Australia , Canada , Menorca , South Africa and Sri Lanka also constructed towers. The construction of Martello towers abroad continued until as late as the 1870s but was discontinued after it became clear that they could not withstand
5148-557: The Genoese built a newer generation of circular towers (the Genoese towers ), that warded off later foreign raids. On 7 February 1794 as part of the siege of Saint-Florent , two British warships, HMS Fortitude (74 guns) and Juno (32 guns), unsuccessfully attacked the tower at Mortella Point; the tower eventually fell to land-based forces under Sir John Moore after two days of heavy fighting. The British forces were helped by
5265-570: The Hackness tower as a museum. A small number of Martello towers were also built in Wales, of which few survive. The most notable surviving towers are the two located in Pembroke Dock , which were built between 1848 and 1857 to protect the naval base there. Today, one of the towers is privately owned. The other is located on the town's riverfront, next to the old entrance of the naval base. It
5382-593: The Indus Valley Civilization were fortified. Forts also appeared in urban cities of the Gangetic valley during the second urbanisation period between 600 and 200 BC, and as many as 15 fortification sites have been identified by archaeologists throughout the Gangetic valley, such as Kaushambi , Mahasthangarh , Pataliputra , Mathura , Ahichchhatra , Rajgir , and Lauria Nandangarh . The earliest Mauryan period brick fortification occurs in one of
5499-705: The Irish Naval Service HQ) and at Belvelly and Rossleague on the Great Island (near Cobh ). There are also Martello towers at Little Island and Rostellan , though these are no longer intact. The British built two Martello towers on the Hook Peninsula to protect the fort near Duncannon , County Wexford and the entrance to Waterford Harbour. There is a third tower on the headland at Baginbun Bay in County Wexford. One of
5616-641: The Iron Age and peaking in Iron Age II (10th–6th century BC). However, the construction of casemate walls had begun to be replaced by sturdier solid walls by the 9th century BC , probably due the development of more effective battering rams by the Neo-Assyrian Empire . Casemate walls could surround an entire settlement, but most only protected part of it. The three different types included freestanding casemate walls, then integrated ones where
5733-410: The Napoleonic Wars. It is square rather than round, unlike the traditional Martello tower. This tower is known locally as the Gabhla Fhranca ("French Tower") or the Napoleonic Tower. It is marked on an 1838 Ordnance Survey chart and denoted "Signal Tower", suggesting it was used with a series of other stations for communication. The tower's position offers a view of the sea both to the north and south of
5850-425: The advent of missile-equipped warships , the term missile "magazine" has also been applied to the storage area for guided missiles on the ship, usually carried below the main decks of the warships. For ships with both forward and aft surface-to-air missile launchers, there are at least two missile magazines. Sometimes the magazines of guided-missile frigates and guided-missile destroyers have carried or do carry
5967-409: The ancient site of Mycenae (famous for the huge stone blocks of its ' cyclopean ' walls). In classical era Greece , the city of Athens built two parallel stone walls, called the Long Walls , that reached their fortified seaport at Piraeus a few miles away. In Central Europe , the Celts built large fortified settlements known as oppida , whose walls seem partially influenced by those built in
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#17327733773996084-415: The arrival of cannons in the 14th century. Fortifications in the age of black powder evolved into much lower structures with greater use of ditches and earth ramparts that would absorb and disperse the energy of cannon fire. Walls exposed to direct cannon fire were very vulnerable, so the walls were sunk into ditches fronted by earth slopes to improve protection. The arrival of explosive shells in
6201-410: The arrival of cannons on the 14th century battlefield . Fortifications in the age of black powder evolved into much lower structures with greater use of ditches and earth ramparts that would absorb and disperse the energy of cannon fire. Walls exposed to direct cannon fire were very vulnerable, so were sunk into ditches fronted by earth slopes. This placed a heavy emphasis on the geometry of
6318-419: The border. The art of setting out a military camp or constructing a fortification traditionally has been called "castrametation" since the time of the Roman legions . Fortification is usually divided into two branches: permanent fortification and field fortification. There is also an intermediate branch known as semi-permanent fortification. Castles are fortifications which are regarded as being distinct from
6435-402: The claims made in Barbudan tourism publications that this was the World's first, and is its oldest, Martello tower, built in 1745. The tower is located on the south coast of the island, a mile or so from River Landing and some seven miles south of the island's main village of Codrington . The tower is 56 feet high, has a raised gun platform and extremely thick walls, but is missing the floors. It
6552-417: The coastlines of the two main islands of the British Isles as a whole. This is most clearly visible on the south and east coasts of England and the east coast of Ireland , where chains of Martello towers were built. Elsewhere in the world, individual Martello towers were erected to provide point defence of strategic locations. Between 1804 and 1812 the British authorities built a chain of towers based on
6669-506: The control of prime agricultural land. The fortification varies by site. While Dholavira has stone-built fortification walls, Harrapa is fortified using baked bricks; sites such as Kalibangan exhibit mudbrick fortifications with bastions and Lothal has a quadrangular fortified layout. Evidence also suggested of fortifications in Mohenjo-daro . Even a small town—for instance, Kotada Bhadli, exhibiting sophisticated fortification-like bastions—shows that nearly all major and minor towns of
6786-620: The current level of military development. During the Renaissance era , the Venetian Republic raised great walls around cities, and the finest examples, among others, are in Nicosia (Cyprus), Rocca di Manerba del Garda (Lombardy), and Palmanova (Italy), or Dubrovnik (Croatia), which proved to be futile against attacks but still stand to this day. Unlike the Venetians, the Ottomans used to build smaller fortifications but in greater numbers, and only rarely fortified entire settlements such as Počitelj , Vratnik , and Jajce in Bosnia . Medieval-style fortifications were largely made obsolete by
6903-435: The defences be constructed far enough away from the fortress town to protect the inhabitants from bombardment by the besiegers, the range of whose guns was steadily increasing as better manufactured weapons were introduced. Threfore, since refortifying the Prussian fortress cities of Koblenz and Cologne after 1815, the principle of the ring fortress or girdle fortress was used: forts, each several hundred metres out from
7020-401: The design. But they got the name wrong, misspelling "Mortella" as "Martello" (which means "hammer" in Italian). When the British withdrew from Corsica in 1803, with great difficulty they blew up the tower , leaving it in an unusable state. The towers were about 40 feet (12 m) high with walls about 8 feet (2.4 m) thick. In some towers the rooms were not built in the centre, but more to
7137-427: The earliest walled settlements in Europe but it is younger than the walled town of Sesklo in Greece from 6800 BC. Uruk in ancient Sumer ( Mesopotamia ) is one of the world's oldest known walled cities . The Ancient Egyptians also built fortresses on the frontiers of the Nile Valley to protect against invaders from neighbouring territories, as well as circle-shaped mud brick walls around their cities. Many of
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#17327733773997254-426: The effect of thirty years of evolution on the design of coastal fortifications, between the 1790s and 1822. The earlier Ferry Island Fort nearby had multiple guns arrayed to cover the water westward, while the Martello tower used a single gun with 360° traverse to cover all of the surrounding area. Like its predecessors in the UK, it has an ovoid footprint with the thickness of its walls ranging from nine to 11 feet. It
7371-491: The escalation of the Sri Lankan Civil War ; Jaffna fort , for example, came under siege several times. Large tempered earth (i.e. rammed earth ) walls were built in ancient China since the Shang dynasty ( c. 1600 –1050 BC); the capital at ancient Ao had enormous walls built in this fashion (see siege for more info). Although stone walls were built in China during the Warring States (481–221 BC), mass conversion to stone architecture did not begin in earnest until
7488-467: The existing fortifications at Fort Henry received two thin towers between 1845 and 1848. However, these are dry ditch defence towers, rather than true Martello towers.) A common characteristic of Canadian Martello towers was removable cone-shaped roofs to protect against snow. Today, many of the restored towers have permanent roof additions – for ease of upkeep, not historical accuracy. Quebec City originally had four Martello towers. Tower No. 1 stands on
7605-424: The fact that the tower's two 18-pounder guns fired seaward, while only the one 6-pounder could fire landward. Vice-Admiral Lord Hood reported: The Fortitude and Juno were ordered against it, without making the least impression by a continued cannonade of two hours and a half; and the former ship being very much damaged by red-hot shot, both hauled off. The walls of the Tower were of a prodigious thickness, and
7722-404: The first such tower constructed in the Caribbean, was built in 1745 by Sir William Codrington , and was designed by Commodore Charles Knowles RN, later Admiral Sir Charles Knowles Bt, who was then commanding the Leeward Islands station. It is attached to what remains of the pre-existing fort. The tower mounted three cannon, and in all the fort mounted ten cannons, none of which remain. The tower
7839-408: The fortification to allow defensive cannonry interlocking fields of fire to cover all approaches to the lower and thus more vulnerable walls. The evolution of this new style of fortification can be seen in transitional forts such as Sarzanello in North West Italy which was built between 1492 and 1502. Sarzanello consists of both crenellated walls with towers typical of the medieval period but also has
7956-596: The fortifications of the ancient world were built with mud brick, often leaving them no more than mounds of dirt for today's archaeologists. A massive prehistoric stone wall surrounded the ancient temple of Ness of Brodgar 3200 BC in Scotland . Named the "Great Wall of Brodgar" it was 4 metres (13 ft) thick and 4 metres tall. The wall had some symbolic or ritualistic function. The Assyrians deployed large labour forces to build new palaces , temples and defensive walls. In Bronze Age Malta , some settlements also began to be fortified. The most notable surviving example
8073-409: The generic fort or fortress in that they are a residence of a monarch or noble and command a specific defensive territory. Roman forts and hill forts were the main antecedents of castles in Europe, which emerged in the 9th century in the Carolingian Empire . The Early Middle Ages saw the creation of some towns built around castles. Medieval-style fortifications were largely made obsolete by
8190-405: The height of the Maguindanao Sultanate 's power, they blanketed the areas around Western Mindanao with kotas and other fortifications to block the Spanish advance into the region. These kotas were usually made of stone and bamboo or other light materials and surrounded by trench networks. As a result, some of these kotas were burned easily or destroyed. With further Spanish campaigns in the region,
8307-433: The huge stone blocks of its ' cyclopean ' walls). A Greek phrourion was a fortified collection of buildings used as a military garrison , and is the equivalent of the Roman castellum or fortress. These constructions mainly served the purpose of a watch tower, to guard certain roads, passes, and borders. Though smaller than a real fortress, they acted as a border guard rather than a real strongpoint to watch and maintain
8424-413: The inner wall was part of the outer buildings of the settlement, and finally filled casemate walls, where the rooms between the walls were filled with soil right away, allowing for a quick, but nevertheless stable construction of particularly high walls. The Romans fortified their cities with massive, mortar-bound stone walls. The most famous of these are the largely extant Aurelian Walls of Rome and
8541-402: The intervals between them. The arrival of explosive shells in the 19th century led to yet another stage in the evolution of fortification. Star forts did not fare well against the effects of high explosives and the intricate arrangements of bastions, flanking batteries and the carefully constructed lines of fire for the defending cannon could be rapidly disrupted by explosive shells. Worse,
8658-475: The island and is therefore well-suited for that purpose. By the 1830s the tower was described as a "watch-house of the coast-guard." The British originally constructed River Fort Martello Tower in the early 19th century, on the site of a previous fort (presumed to have been built by the Spanish) to guard nearby River Landing, which was Barbuda 's original quay. Confusion with the previous fort presumably explains
8775-486: The island began in 1841 but was not completed. The construction had begun following an 1839 night-time incursion into Sydney Harbour by two American warships. Concern with the threat of foreign attack had caused the government to review the harbour's inner defences, which were found to be inadequate, and the establishment of a fort was recommended to help protect Sydney Harbour from attack by foreign vessels. Construction resumed in 1855 to provide Sydney with protection against
8892-400: The landside, leaving the walls thicker on seaside. These were cases where an attack with a cannon from the landside was thought very unlikely. Entry was by ladder to a door about 10 feet (3.0 m) from the base above which was a machicolated (slotted) platform which allowed for downward fire on attackers. The flat roof or terreplein had a high parapet and a raised platform in the centre with
9009-413: The large open ditches surrounding forts of this type were an integral part of the defensive scheme, as was the covered way at the edge of the counter scarp . The ditch was extremely vulnerable to bombardment with explosive shells. In response, military engineers evolved the polygonal style of fortification. The ditch became deep and vertically sided, cut directly into the native rock or soil, laid out as
9126-516: The magazines are required to store not only the aircraft carrier's own defensive weapons, but all of the weapons for her warplanes , including rapid-fire gun ammunition, air-to-air missiles such as the Sidewinder missile , air-to-surface missiles such as the Maverick missile , Mk 46 ASW torpedoes , Joint Direct Attack Munitions , "dumb bombs", HARM missiles , and anti-ship missiles such as
9243-548: The main antecedents of castles in Europe , which emerged in the 9th century in the Carolingian Empire . The Early Middle Ages saw the creation of some towns built around castles. These cities were only rarely protected by simple stone walls and more usually by a combination of both walls and ditches . From the 12th century, hundreds of settlements of all sizes were founded all across Europe, which very often obtained
9360-469: The most interesting Martello towers is Meelick Martello Tower at Clonahenoge , County Offaly , guarding the Shannon river crossing to Meelick, County Galway . As this tower supports three guns (unlike the normal Martello tower which is circular on plan and carries only one gun), it is cam shaped on plan. Currently a rampant growth of ivy covers the tower. The tower at Seapoint , County Dublin , which
9477-523: The new generation of rifled artillery weapons. The French built similar towers along their own coastline that they used as platforms for communication by optical telegraphs (using the Chappe Telegraph ). The United States government also built a number of Martello towers along the east coast of the US that copied the British design with some modifications. Great Britain and Ireland were united as
9594-539: The old walled city of Manila located along the southern bank of the Pasig River . The historic city was home to centuries-old churches, schools, convents, government buildings and residences, the best collection of Spanish colonial architecture before much of it was destroyed by the bombs of World War II . Of all the buildings within the 67-acre city, only one building, the San Agustin Church, survived
9711-431: The original Mortella tower to defend the south and east coast of England , Ireland, Jersey and Guernsey to guard against possible invasion from France , then under the rule of Napoleon I . A total of 103 Martello towers were built in England, set at regular intervals along the coast from Seaford , Sussex , to Aldeburgh , Suffolk . Most were constructed under the direction of General William Twiss (1745–1827) and
9828-440: The original enceinte, were carefully sited so as to make best use of the terrain and to be capable of mutual support with the neighbouring forts. Gone were citadels surrounding towns: forts were to be moved to the outside of the cities some 12 km to keep the enemy at a distance so their artillery could not bombard the city center. From now on a ring of forts were to be built at a spacing that would allow them to effectively cover
9945-738: The outset of colonial rule in the Indian Ocean , Sri Lanka was occupied by several major colonial empires that from time to time became the dominant power in the Indian Ocean. The colonists built several western-style forts, mostly in and around the coast of the island. The first to build colonial forts in Sri Lanka were the Portuguese ; these forts were captured and later expanded by the Dutch . The British occupied these Dutch forts during
10062-492: The parapet, where there were two eighteen-pounders, was lined with bass junk, five feet from the walls, and filled up with sand; and although it was cannonaded from the Height for two days, within 150 yards, and appeared in a very shattered state, the enemy still held out; but a few hot shot setting fire to the bass, made them call for quarter. The number of men in the Tower were 33; only two were wounded, and those mortally. Late in
10179-437: The pioneering era of North America, many outposts on the frontiers, even non-military outposts, were referred to generically as forts. Larger military installations may be called fortresses; smaller ones were once known as fortalices. The word fortification can refer to the practice of improving an area's defense with defensive works. City walls are fortifications but are not necessarily called fortresses. The art of setting out
10296-470: The previous year, the tower's French defenders had abandoned it after HMS Lowestoffe (32 guns) had fired two broadsides at it. The British removed the guns to arm a small vessel; consequently, the French were easily able to dislodge the garrison of Corsican patriots that had replaced them. Still, the British were impressed by the effectiveness of the tower when properly supplied and defended, and copied
10413-509: The re-use of their masonry. The sea washed thirty away and the military destroyed four in experiments to test the effectiveness of the new rifled artillery. During the Second World War , some Martello towers returned to military service as observation platforms and firing platforms for anti-aircraft artillery . Forty-seven Martello towers have survived in England, a few of which have been restored and transformed into museums (e.g.,
10530-656: The resistance of the outer wall against battering rams. Originally thought to have been introduced to the region by the Hittites , this has been disproved by the discovery of examples predating their arrival, the earliest being at Ti'inik (Taanach) where such a wall has been dated to the 16th century BC . Casemate walls became a common type of fortification in the Southern Levant between the Middle Bronze Age (MB) and Iron Age II, being more numerous during
10647-481: The resources that a state can supply of constructive and mechanical skill, and are built of enduring materials. Field fortifications—for example breastworks —and often known as fieldworks or earthworks, are extemporized by troops in the field, perhaps assisted by such local labour and tools as may be procurable and with materials that do not require much preparation, such as soil, brushwood, and light timber , or sandbags (see sangar ). An example of field fortification
10764-429: The right of fortification soon afterward. The founding of urban centres was an important means of territorial expansion and many cities, especially in eastern Europe , were founded precisely for this purpose during the period of Eastern Colonisation . These cities are easy to recognise due to their regular layout and large market spaces. The fortifications of these settlements were continuously improved to reflect
10881-498: The rigid steel does not allow blast waves to dissipate. The USS Iowa turret explosion was such an example: in 1989 a loading incident caused a gun turret explosion, which spread to further powder stores in the turret, which eventually killed all 47 men in the turret. The turret served to contain the blast, protecting the rest of the ship, but amplified the blast inside the turret ensuring deadly conditions. During World War II, many ships met their end via magazine detonations. During
10998-453: The smaller towers as well as being powerful fortifications in their own right. The effectiveness of Britain's Martello towers was never actually tested in combat against a Napoleonic invasion fleet. They were, however, effective in hindering smuggling. After the threat had passed, the Martello towers in England met a variety of fates. The Coastguard took over many to aid in the fight against smuggling. Fifteen towers were demolished to enable
11115-548: The south coast of Galway Bay in the townlands of Finavarra and Aughinish . There is also an extant Martello tower located near the settlement of Magilligan Point in County Londonderry , built between 1812 and 1871 to defend against a possible French invasion during the Napoleonic Wars ; it is now a visitor attraction. A Martello-like tower was built on Achill Island , according to local memory during
11232-514: The south coast. On the east coast, concentrated mainly around Dublin Bay, twenty-six towers were in line of sight of each other, providing the ability to communicate with one another, or warn of any incoming attacks. Possibly the most famous is the Martello tower in Sandycove , near Dún Laoghaire , in which James Joyce lived for a few days. Joyce shared the tower with Oliver St. John Gogarty , then
11349-435: The stockades by mounting old-fashioned bayonet charges, after laying down some covering fire. Defensive works were of importance in the tropical African Kingdoms. In the Kingdom of Kongo field fortifications were characterized by trenches and low earthen embankments. Such strongpoints ironically, sometimes held up much better against European cannon than taller, more imposing structures. Roman forts and hill forts were
11466-438: The stupa mounds of Lauria Nandangarh, which is 1.6 km in perimeter and oval in plan and encloses a habitation area. Mundigak ( c. 2500 BC ) in present-day south-east Afghanistan has defensive walls and square bastions of sun dried bricks. India currently has over 180 forts, with the state of Maharashtra alone having over 70 forts, which are also known as durg , many of them built by Shivaji , founder of
11583-636: The sultanate was subdued and a majority of kotas dismantled or destroyed. kotas were not only used by the Muslims as defense against Spaniards and other foreigners, renegades and rebels also built fortifications in defiance of other chiefs in the area. During the American occupation, rebels built strongholds and the datus, rajahs, or sultans often built and reinforced their kotas in a desperate bid to maintain rule over their subjects and their land. Many of these forts were also destroyed by American expeditions, as
11700-501: The summer. Fortification From very early history to modern times, defensive walls have often been necessary for cities to survive in an ever-changing world of invasion and conquest . Some settlements in the Indus Valley Civilization were the first small cities to be fortified. In ancient Greece , large stone walls had been built in Mycenaean Greece , such as the ancient site of Mycenae (known for
11817-627: The threat of a naval attack by the Russians during the Crimean War of the 1850s. However, construction was completed only in 1857, well after the war had ended. Fort Denison is well preserved and is now a popular tourist attraction. There is a Martello tower located at Ferry Reach in St George's Parish . The tower is the third fortification on the site. Major Thomas Blanshard built it of Bermuda limestone between 1822 and 1823. The tower shows
11934-712: The tower, with a glacis . There is also a coach house, artillery store, tool shed, and gunner's cottage, with resident gunner and gunpowder store. The battery, while restored, remains to be armed and the coach house and artillery store still require some restoration. On the north side of Dublin, one can find Martello towers in Balbriggan , Shenick Island and Red Island at Skerries , Drumanagh Fort , Rush , Tower Bay in Portrane , Donabate , Malahide (Hicks tower owned by Tony Quinn ), Portmarnock , Ireland's Eye , Howth , and Sutton . There were seven Martello towers in
12051-466: The towers at St Osyth and Seaford ), visitor centres, and galleries (such as Jaywick Martello Tower ). Some are privately owned or are private residences, The remainder are derelict. A survey of the East Coast towers in 2007 found of the 17 remaining, most were in a reasonable condition. Many remaining Martello Towers are now Listed Buildings . A fuller list of British towers, with photographs,
12168-407: The town of Provadia a walled fortified settlement today called Solnitsata starting from 4700 BC had a diameter of about 300 feet (91 m), was home to 350 people living in two-storey houses, and was encircled by a fortified wall. The huge walls around the settlement, which were built very tall and with stone blocks which are 6 feet (1.8 m) high and 4.5 feet (1.4 m) thick, make it one of
12285-485: The two sides in a stalemate. Hoping to make several attacks at once, the confederates persuaded the Medina-allied Banu Qurayza to attack the city from the south. However, Muhammad's diplomacy derailed the negotiations, and broke up the confederacy against him. The well-organized defenders, the sinking of confederate morale, and poor weather conditions caused the siege to end in a fiasco. During
12402-582: The vicinity of Cork Harbour of which five are extant. During the 19th century Fenian uprising , the famous Captain Mackey briefly captured and held the Monning Martello tower near Fota Island in Cork Harbour ; this tower is believed to have been the only Martello tower ever captured, other than the original. The other Cork Harbour towers are at Ringaskiddy , Haulbowline Island (now part of
12519-559: The war. Partial listing of Spanish forts: The Ivatan people of the northern islands of Batanes built their so-called idjang on hills and elevated areas to protect themselves during times of war. These fortifications were likened to European castles because of their purpose. Usually, the only entrance to the castles would be via a rope ladder that would only be lowered for the villagers and could be kept away when invaders arrived. The Igorots built forts made of stone walls that averaged several meters in width and about two to three times
12636-410: The width in height around 2000 BC. The Muslim Filipinos of the south built strong fortresses called kota or moong to protect their communities. Usually, many of the occupants of these kotas are entire families rather than just warriors. Lords often had their own kotas to assert their right to rule, it served not only as a military installation but as a palace for the local Lord. It is said that at
12753-634: The world's second longest man-made structure, as well as the most extensive earthwork in the world, by the Guinness Book of Records, 1974 . The walls may have been constructed between the thirteenth and mid-fifteenth century CE or, during the first millennium CE. Strong citadels were also built other in areas of Africa. Yorubaland for example had several sites surrounded by the full range of earthworks and ramparts seen elsewhere, and sited on ground. This improved defensive potential—such as hills and ridges. Yoruba fortifications were often protected with
12870-430: Was a large Celtic proto-urban or city-like settlement at modern-day Manching (near Ingolstadt), Bavaria (Germany). The settlement was founded in the 3rd century BC and existed until c. 50–30 BC . It reached its largest extent during the late La Tène period (late 2nd century BC), when it had a size of 380 hectares. At that time, 5,000 to 10,000 people lived within its 7.2 km long walls. The oppidum of Bibracte
12987-446: Was converted into a small museum that focused on the local history of the dock and its defences. The museum has now shut down because of water influx. Recently Pembrokeshire County Council has decided to put the tower up for sale. About fifty Martello towers were built around the Irish coastline, especially along the east coast, from Millmount (Drogheda), to Bray , around Dublin Bay (29 installations) but also around Cork Harbour on
13104-603: Was employed in later wars against the British to block British advances. Some of these fortifications were over a hundred yards long, with heavy parallel tree trunks. They were impervious to destruction by artillery fire. Behind these stockades, numerous Ashanti soldiers were mobilized to check enemy movement. While formidable in construction, many of these strongpoints failed because Ashanti guns, gunpowder and bullets were poor, and provided little sustained killing power in defense. Time and time again British troops overcame or bypassed
13221-597: Was mounted on top. The site is open to the public from 10 a.m. to 2 p.m. Monday to Friday in the summer and in the winter by appointment only, by calling the Parks Department. It is part of the Bermuda Railway Trail. When the British rebuilt Fort Recovery on the west end of Tortola they added a Martello tower. Nine of the fourteen Martello towers built in Canada still survive. (In addition,
13338-478: Was published by Giovanni Battista Zanchi in 1554. Fortifications also extended in depth, with protected batteries for defensive cannonry, to allow them to engage attacking cannons to keep them at a distance and prevent them from bearing directly on the vulnerable walls. The result was star shaped fortifications with tier upon tier of hornworks and bastions , of which Fort Bourtange is an excellent example. There are also extensive fortifications from this era in
13455-406: Was the construction of Fort Necessity by George Washington in 1754. There is also an intermediate branch known as semi-permanent fortification. This is employed when in the course of a campaign it becomes desirable to protect some locality with the best imitation of permanent defences that can be made in a short time, ample resources and skilled civilian labour being available. An example of this
13572-864: Was the property of Blackrock Urban District Council, was formerly the clubhouse of the Seapoint Boat Club from 1916 to 1931, and was subsequently the headquarters of the Genealogical Society of Ireland (GSI). The GSI vacated the tower when it found that the atmosphere was not conducive to the preservation of records. The restored tower at Ilnacullin is a feature of an island garden in Glengarriff , County Cork . Several other towers are still extant, including one at Rathmullan in County Donegal and two in County Clare on
13689-434: Was used long before the appearance of writing and began "perhaps with primitive man blocking the entrances of his caves for security from large carnivores ". From very early history to modern times, walls have been a necessity for many cities. Amnya Fort in western Siberia has been described by archaeologists as one of the oldest known fortified settlements, as well as the northernmost Stone Age fort. In Bulgaria, near
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