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96-409: In a fortification with bastions , the citadel is the strongest part of the system, sometimes well inside the outer walls and bastions, but often forming part of the outer wall for the sake of economy. It is positioned to be the last line of defence, should the enemy breach the other components of the fortification system. Some of the oldest known structures which have served as citadels were built by

192-430: 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

288-525: A commanding eminence, was important in the life of the people, serving as a lookout, a refuge, and a stronghold in peril, as well as containing military and food supplies, the shrine of the god and a royal palace . The most well known is the Acropolis of Athens , but nearly every Greek city-state had one – the Acrocorinth is famed as a particularly strong fortress. In a much later period, when Greece

384-528: A different part of Jerusalem. At various periods, and particularly during the Middle Ages and the Renaissance , the citadel – having its own fortifications, independent of the city walls – was the last defence of a besieged army, often held after the town had been conquered. Locals and defending armies have often held out citadels long after the city had fallen. For example, in the 1543 Siege of Nice

480-521: 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

576-641: A few hours before the arrival of Spanish-Italian relief fleet led Andrea Doria , who bombarded the French positions in Villefranche before disembarking tercios under Alfonso D'Avalos . Doria lost four galleys during the fight, but D'Avalos successfully made its way to the Nice citadel. Some sources say that the last night before leaving, Barbarossa plundered the city, burned parts of it, and took 5,000 captives. However, Spanish accounts are unanimous that it

672-424: A historian who stood witness to the siege, made no mention of her involvement in the defense. Historically attested defense of Nice include the townspeople's destruction of a key bridge and the arrival of an army mustered by a Savoyard duke, Charles III. Nevertheless, the legend of Catherine Ségurane has excited the local imagination. Louis Andrioli wrote an epic poem about her in 1808, and a play dedicated to her story

768-413: 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 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

864-591: 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

960-699: A series of straight lines creating the central fortified area that gives this style of fortification its name. Siege of Nice Mediterranean The siege of Nice occurred in 1543 and was part of the Italian War of 1542–46 in which Francis I and Suleiman the Magnificent collaborated as part of the Franco-Ottoman alliance against the Holy Roman Emperor Charles V , and Henry VIII of England . At that time, Nice

1056-622: A surprise attack on Nice once, but had been repulsed by Andrea Doria . Following an agreement between Francis I and Suleyman the Magnificent, through the intervention of the French ambassador in Constantinople , Captain Polin , a fleet of 110 galleys under Hayreddin Barbarossa left from the Sea of Marmara in mid-May 1543. He then raided the coasts of Sicily and Southern Italy through

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1152-561: Is also an intermediate branch known as semi-permanent fortification. Castles are fortifications which are regarded as being distinct from 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

1248-428: 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

1344-548: 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 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

1440-519: 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 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

1536-746: 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

1632-637: 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 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

1728-629: The Indus Valley civilisation , where citadels represented a centralised authority. Citadels in Indus Valley were almost 12 meters tall. The purpose of these structures, however, remains debated. Though the structures found in the ruins of Mohenjo-daro were walled, it is far from clear that these structures were defensive against enemy attacks. Rather, they may have been built to divert flood waters. Several settlements in Anatolia , including

1824-1205: 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

1920-586: 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)

2016-569: 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

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2112-527: 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

2208-707: 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 ,

2304-784: The Parc de la Ciutadella . A similar example is the Citadella in Budapest , Hungary. The attack on the Bastille in the French Revolution – though afterwards remembered mainly for the release of the handful of prisoners incarcerated there – was to considerable degree motivated by the structure's being a Royal citadel in the midst of revolutionary Paris. Similarly, after Garibaldi 's overthrow of Bourbon rule in Palermo , during

2400-618: 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

2496-669: The Spanish Civil War , in which the Nationalists held out against a much larger Republican force for two months until relieved, shows that in some cases a citadel can be effective even in modern warfare; a similar case is the Battle of Huế during the Vietnam War , where a North Vietnamese Army division held the citadel of Huế for 26 days against roughly their own numbers of much better-equipped US and South Vietnamese troops. The Citadelle of Québec (the construction

2592-634: 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 ,

2688-828: 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

2784-539: The " Château de Cimiez ", apparently because the French were unable to supply sufficient gunpowder to their Ottoman allies. Another important battle against the castle took place on 8 September, but the force finally retreated upon learning that an Imperial army was on the move to meet them: Duke Charles III , ruler of the Duchy of Savoy , had raised an army in Piedmont to free the city. Barbarossa withdrew his fleet

2880-401: 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 is Borġ in-Nadur , where a bastion built in around 1500 BC

2976-521: The 1860 Unification of Italy , Palermo's Castellamare Citadel – a symbol of the hated and oppressive former rule – was ceremoniously demolished. Following Belgium gaining its independence in 1830, a Dutch garrison under General David Hendrik Chassé held out in Antwerp Citadel between 1830 and 1832, while the city had already become part of independent Belgium. The Siege of the Alcázar in

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3072-530: 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 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

3168-518: The Assyrian city of Kaneš in modern-day Kültepe , featured citadels. Kaneš' citadel contained the city's palace, temples, and official buildings. The citadel of the Greek city of Mycenae was built atop a highly-defensible rectangular hill and was later surrounded by walls in order to increase its defensive capabilities. In Ancient Greece , the Acropolis , which literally means "high city", placed on

3264-593: 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

3360-641: 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

3456-594: The Ottoman forces led by Barbarossa conquered and pillaged the town and took many captives, but the citadel held out. In the Philippines , the Ivatan people of the northern islands of Batanes often built fortifications to protect themselves during times of war. They built their so-called idjangs on hills and elevated areas. These fortifications were likened to European castles because of their purpose. Usually,

3552-565: The Ottoman forces, led by Hayreddin Barbarossa , first joined at Marseilles in August 1543. Although the Duchy of Savoy , of which Nice was a part, had been a French protectorate for a century, Francis I chose to attack the city of Nice with the allied force, mainly because Charles III, Duke of Savoy had angered him by marrying Beatrice of Portugal , thus becoming an ally of the Habsburgs . François de Bourbon had already attempted to make

3648-518: 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

3744-410: 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

3840-625: The boundaries of a country. These modern citadels are built to protect the command centre from heavy attacks, such as aerial or nuclear bombardment. The military citadels under London in the UK, including the massive underground complex Pindar beneath the Ministry of Defence , are examples, as is the Cheyenne Mountain nuclear bunker in the US. On armoured warships, the heavily armoured section of

3936-429: The campaign, Barbarossa is known to have complained about the state of the French ships and the inappropriateness of their equipment and stores. He famously said "Are you seamen to fill your casks with wine rather than powder?". He nevertheless displayed great reluctance to attack Andrea Doria when the latter was put in difficulty after landing the relief army, losing 4 galleys in a storm. It has been suggested that there

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4032-457: The city of Nice on 6 August 1543. In this action 110 Ottoman galleys combined with 50 French ones. The Franco-Ottomans were confronted by a stiff resistance which gave rise to the story of Catherine Ségurane , culminating with a major battle on 15 August, but the city surrendered on 22 August. The French prevented the Ottomans from sacking the city. They could not however take the castle,

4128-516: The coast with defensive fortifications, especially the castle of Nice and the Fort du mont Alban , and the fort of Saint-Elme de Villefranche. Catherine Ségurane ( Catarina Ségurana in the Niçard dialect of Provençal ) is a folk heroine of Nice said to have played a decisive role in repelling the city's siege by Turkish invaders allied with Francis I , the siege of Nice, in the summer of 1543. At

4224-506: 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

4320-407: The creation of some towns built around castles. Medieval-style fortifications were largely made obsolete by 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

4416-620: 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

4512-435: 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

4608-491: 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

4704-400: 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 was the construction of Fort Necessity by George Washington in 1754. There is also an intermediate branch known as semi-permanent fortification. This

4800-408: 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

4896-418: 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 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

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4992-504: 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 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

5088-447: The harbour of Toulon on 10 July and then was received with honours at the harbour of Marseille on 21 July, where he joined the French forces under the Governor of Marseille, François, Count of Enghien . The combined fleet sailed out of Marseille on the 5th of August. The Ottoman force first landed at Villefranche , 6 kilometers east of Nice , which it took and destroyed. The French and Ottoman forces then collaborated to attack

5184-405: 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,

5280-418: The history of the Maccabean Revolt against the Seleucid Empire . The Hellenistic garrison of Jerusalem and local supporters of the Seleucids held out for many years in the Acra citadel, making Maccabean rule in the rest of Jerusalem precarious. When finally gaining possession of the place, the Maccabeans pointedly destroyed and razed the Acra, though they constructed another citadel for their own use in

5376-413: 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

5472-402: 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,

5568-413: 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

5664-428: 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

5760-478: The month of June, anchoring in front of Rome at the mouth of the Tiber on 29 June, while Polin wrote reassurances that attacks against Rome would not take place. Barbarossa arrived with his fleet, accompanied by the French Ambassador Polin, at Île Saint-Honorat on 5 July. As almost nothing had been prepared on the French side to assist the Ottoman fleet, Polin was dispatched to meet with Francis I at Marolles and ask him for support. Meanwhile, Barbarossa went to

5856-411: 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

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5952-436: 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. In times of war, the citadel in many cases afforded retreat to the people living in the areas around the town. However, citadels were often used also to protect a garrison or political power from the inhabitants of the town where it was located, being designed to ensure loyalty from

6048-440: 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

6144-437: The origins of the Celts were attributed to this period by John T. Koch and supported by Barry Cunliffe . The Ave River Valley in Portugal was the core region of this culture, with a large number of small settlements (the castros ), but also settlements known as citadels or oppida by the Roman conquerors. These had several rings of walls and the Roman conquest of the citadels of Abobriga, Lambriaca and Cinania around 138 BC

6240-451: 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

6336-409: 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 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

6432-471: 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 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

6528-501: The release of Turgut Reis . France provided about 10,000,000 kilograms of bread to supply the Ottoman army during the 6 months it stayed in Toulon, and for the provisioning of the following summer's campaign and return to Constantinople. It seems the involvement of Francis I to this joint effort with the Ottomans were rather half-hearted however, as many European powers were complaining about such an alliance against another Christian power. Relations remained tensed and suspicious between

6624-468: 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

6720-429: 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

6816-436: The ship that protects the ammunition and machinery spaces is called the armoured citadel . A modern naval interpretation refers to the heaviest protected part of the hull as "the vitals", and the citadel is the semi-armoured freeboard above the vitals. Generally, Anglo-American and German languages follow this while Russian sources/language refer to "the vitals" as цитадель "citadel". Likewise, Russian literature often refers to

6912-489: 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

7008-438: 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

7104-636: 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

7200-451: The time, Nice was part of Savoy , independent from France, and had no standing military to defend it. Most versions of the tale have Catherine Ségurane, a common washerwoman, leading the townspeople into battle. Legend has it that she knocked out a standard-bearer with her beater and took his flag. Catherine's existence has never been definitively proven, and her heroic act of mooning is likely pure fiction or highly exaggerated; Jean Badat,

7296-524: The town as well as on the sea approaches. Barcelona had a great citadel built in 1714 to intimidate the Catalans against repeating their mid-17th- and early-18th-century rebellions against the Spanish central government. In the 19th century, when the political climate had liberalized enough to permit it, the people of Barcelona had the citadel torn down, and replaced it with the city's main central park,

7392-609: The town that they defended. This was used, for example, during the Dutch Wars of 1664–1667, King Charles II of England constructed a Royal Citadel at Plymouth , an important channel port which needed to be defended from a possible naval attack. However, due to Plymouth's support for the Parliamentarians , in the then-recent English Civil War , the Plymouth Citadel was so designed that its guns could fire on

7488-616: The turret of a tank as the 'tower'. The safe room on a ship is also called a citadel. Fortification 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"). 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

7584-459: The two allies. A French-Habsburg peace treaty was finally signed at Crépy on 18 September 1544, and a truce was signed between the Habsburg and the Ottomans on 10 November 1545. The Habsburg emperor Charles V agreed to recognize the new Ottoman conquests. A formal peace treaty was signed on 13 June 1547, after the death of Francis I. A local consequence of the siege was the reinforcement of

7680-485: 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

7776-499: The walls were sunk into ditches fronted by earth slopes to improve protection. The arrival of explosive shells in 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

7872-559: 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

7968-410: 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

8064-587: The winter in France. Throughout the winter, the Ottoman fleet, with its 110 galleys and 30,000 troops, was able to use Toulon as a base to attack the Spanish and Italian coasts under Admiral Salah Rais . They raided Barcelona in Spain, and Sanremo , Borghetto Santo Spirito , Ceriale in Italy, and defeated Italo-Spanish naval attacks. Sailing with his whole fleet to Genoa , Barbarossa negotiated with Andrea Doria

8160-634: 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

8256-430: 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

8352-658: 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

8448-521: 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 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

8544-435: 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

8640-401: Was possible only by prolonged siege . Ruins of notable citadels still exist, and are known by archaeologists as Citânia de Briteiros , Citânia de Sanfins , Cividade de Terroso and Cividade de Bagunte . Rebels who took power in a city, but with the citadel still held by the former rulers, could by no means regard their tenure of power as secure. One such incident played an important part in

8736-478: 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

8832-652: Was ruled by the Latin Empire , the same strong points were used by the new feudal rulers for much the same purpose. In the first millennium BC, the Castro culture emerged in northwestern Portugal and Spain in the region extending from the Douro river up to the Minho , but soon expanding north along the coast, and east following the river valleys. It was an autochthonous evolution of Atlantic Bronze Age communities. In 2008,

8928-501: Was some tacit agreement between Barbarossa and Doria on this occasion. Following the siege, the Ottomans were offered by Francis to winter at Toulon , so that they could continue to harass the Holy Roman Empire , and especially the coast of Spain and Italy, as well the communications between the two countries. Barbarossa was also promised that he would receive help from the French in reconquering Tunis if he stayed through

9024-655: Was started in 1673 and completed in 1820) still survives as the largest citadel still in official military operation in North America . It is home to the Royal 22nd Regiment of the Canadian Army and forms part of the Ramparts of Quebec City dating back to 1620s. Since the mid 20th century, citadels have commonly enclosed military command and control centres, rather than cities or strategic points of defence on

9120-530: Was the French who burned the town, and Sir Godfrey Fisher quotes the French Marshal Vieilleville as saying: “The town of Nice was sacked in defiance of the capitulation terms, and it was then burned. But for this one must not blame Barbarossa and his troops, for they were already far off when this happened… This was put upon the unfortunate Barbarossa in order to uphold the honour and reputation of France, indeed Christendom itself.” During

9216-539: Was under the control of Charles III, Duke of Savoy , an ally of Charles V. This is part of the 1543–1544 Mediterranean campaign of Barbarossa . In the Mediterranean, active naval collaboration took place between France and the Ottoman Empire to fight against Spanish forces, following a request by Francis I, conveyed by Antoine Escalin des Aimars . The French forces, led by François de Bourbon , and

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