Plan of the Hadrian's Wall
Hadrian's Wall run for 80 Roman miles (73 modern miles or 117km) from Bowness-on-Solway to Wallsend (west to east). It was built to mark the north-western frontier of the Roman Empire, to facilitate trade and taxation and to repel invaders.
Permanent conquest of Britain began in AD 43. About AD 100 the northernmost army units lived in forts linked by a road, Stanegate ('the stone road'), between Corbridge and Carlisle. Hadrian came to Britain in AD 122 and ordered the construction of the wall. The route chosen for the Wall largely paralleled the nearby Stanegate, slightly to the north of it. It took the Roman Legions 6 years to complete the wall.
The curtain wall and milecastles were originally made out of turf, earth and timber. Before the end of Hadrian's reign the Turf Wall was replaced with stone. When Hadrian died in AD 138, the new emperor, Antonius Pius, largely abandoned Hadrian's Wall and moved the army north to a new fortification, the Antonine Wall. Although neglected, Hadrian's Wall was not destroyed and was fully reoccupied in AD 160. The army remained stationed on Hadrian's Wall until the end of the Roman Empire in Britain in the early 5th century.
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| Credits: www.photographers-resource.co.uk |
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| Credits: www.castlesfortsbattles.co.uk (edited) |
Fighting Ditch (Ditch): V-shaped trench, except where on a sheer drop (crag). The standard fighting ditch was 3m deep and designed to slow an enemy down and put him in an optimum position to be attacked by a throwing spear.
Between the ditch and the wall there is a 6m berm or movement area.
Curtain wall (Wall): the initial design for the wall was for 3m wide but there are 2.5m width sections. All sections had outer and inner faces of dressed stone set with lime mortar and filled with rubble. Evidence shows that it may have been 5m high toped with a parapet walkway to allow soldiers to patrol.
Military Road: road connecting the forts, turrets and milecastles.
Vallum: U-shaped massive ditch flanked by two mounds of earth, 5m wide and 3m deep.
Stanegate Road ('the stone road'): the Roman road that pre-dated the Wall and initially acted as a frontier, linking the forts of Corbridge (Corstopitum) and Carlisle (Luguvalium), running through the natural gap formed by the valleys of the rivers Tyne (Northumberland) and Irthing (Cumbria).
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| Credits: Birdoswald Roman Fort |
Forts: 17 forts were built, approximately every 7-8 miles, housing 500 - 1000 soldiers (infantry, cavalry or a mix of the two).
Milecastles: a fortified gateway, approximately every roman mile (about 1.48km), manned by a small garrison of 10-30 troops to control movement through the Wall and to collect taxes. Total of 80 milecastles which, on modern maps, are numbered starting in the east.
Turrets: stone towers spaced two to every Roman mile and providing shelter for a small garrison (about 6 soldiers) who kept watch and patrolled the frontier. They were simple structures and were supplied with just a single entrance to the south, with no gateway through the Wall to the land to the north. Total of 158 turrets. In modern maps, turrets are numbered after the nearest eastern milecastle, e.g. Turrets 37A and 37B lie between Milecastles 37 and 38.
Bridges: carried the Wall across large rivers.
Plan of a Roman Fort (castrum)
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| Segedunum Roman Fort |
Wall (vallum): made of stone, 5m high, backed by an earth rampart (agger) about 4m wide and a large ditch (fossa).
Gates: usually 4 (south, north, east, west), single or double-portalled, flanked by towers.
Guard Towers: in the photo above, 2 towers are seen between each gate.
Headquarters (principia): most important building with a walled forecourt, where the administrative offices were; it had an underground chamber which acted as a strong room where the pay for the soldiers was stored.
Commander's House (praetorium): the Commander of the fort (praefectus) and his family lived here; it would have a few luxuries like a private bath house, a private latrine and a hypocaust (underfloor heating) to keep the house comfortable in Winter.
Soldiers Barracks (strigae): housing for a centuria (80 men) and their Centurion. A barrack block was divided into 8-10 rooms, each housing a contubernium (8 men). Equipment was kept at the front and soldiers slept in the back. The Centurion and family lived in a large room at one end of the block.
Cavalry Barracks (strigae): each cavalry barrack was divided into 9 small spaces and a large room at the end. The large room was for the Decurion, the officer in charge of the group of 27 cavalry soldiers (turma). Each 9 small spaces was further divided into a back room and a front room. The back room housed 3 cavalry soldiers and was used to sleep, cook and store their equipment and belongings. The front room was to keep their horses.
Granaries (horrea): to house the grain to feed the men; long and narrow buildings with strong buttressed stone walls with air vents, an overhanging roof to keep rain away from the walls and raised floor supported on posts (pilae) to keep the grain dry and prevent rodents getting in.
Forehall: tall building which run across the front of the headquarters building and the granary; archaeologists do not know exactly what this building was used for.
Bath House or Public Bath (thermae): sometimes inside but usually outside the perimeter of the fort because of the risk of fire; main meeting place and social centre.
Workshops (fabricae): blacksmiths, carpenters, butchers, shoemakers.
Hospital (valetudinarium): consisted of a series of small rooms built around a courtyard; rooms probably included a theatre, wards, latrines and stores.
Water tank: they were filed with rain water or water from springs channelled using aqueducts.
Public Latrines (latrina): benches with holes to form multiple toilet seats over a channel of running water; water was fed from a cistern into a channel at foot level to wash the excrement away through a duct in the walls.
Vicus: civilian settlement outside of the fort. In the photo below, the vicus are the houses outside both gates.
The basic ideal configuration of a fort (castrum):
- Principia (headquarters)
- Via Praetoria (main street)
- Via Principalis
- Porta Principalis Dextra ('right principal gate')
- Porta Praetoria (main gate)
- Porta Principalis Sinistra ('left principal gate')
- Porta Decumana (back gate)
Plan of a Bath House (thermae)
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| Credits: Vindolanda |
- Changing hall (apodyterium) - with niches for clothes.
- Cold room (frigidarium) - cold room often with a large pool (piscina).
- Warm room (tepidarium) - medium-heat room with a lukewarm bath.
- Hot dry room (laconicum or sudatorium) - like a sauna in a modern spa.
- Hot steam room (caldarium) - like a Turkish bath with a piscina of hot water.
- Plunge into the cold bath.
Contubernium: smallest unit in a legion with 8 men; they marched, fought, worked and camped together.
Centuria (century): unit of 80 men or 10 Contubernium. They were under the command of a Centurion. Each centuria had its own Signum (Standard bearer).
Cohort: unit of 6 centurie of 480 men and 6 centurions. A Primus Pilus (Senior Centurion) commanded the Cohort. Each cohort had its own Signum.
Legio (Legion): 5000 men or 10 cohort. The first cohort had extra men, the engineers and all the other helpers that did not fight, about 800 men. Each legion had a name, number and badge. The commanding officer of a Legio is called a Legate or Legatus Legionis. Each Legio had its own Signum.
Eques legionis: each Legio had a cavalry unit of 120 attached to them.


































































