During the reign of Romans Latin term ‘’Castrum” is typically used for forts built and inhibited by military forces. They were originally built across River Danube and River Rhine to protect the region from invaders. They were also built in provinces to exercise control over the people. The Roman construction to date is awe-inspiring and well-protected. The gates of the fort were made from heavy metal with heavy chains hung on them. Inside the fort, there are many separate buildings for different military ranks. They were a settling place for soldiers to get rations, horses, and weapons before the war.
Recently a large Roman fort has been discovered on the Dutch Coast. It is believed that the fort was a successful place for invasion in British during 43AD. It served as a sheltered place for Germanic tribes as the Roman Force tried to invade France through the Northern side of England. As the excavations suggest the Fort has been thought to be built by Emperor Caligula (AD12 to AD14) and later advancements were made by his successor Claudius.
According to Bosman, it was the time when Caligula came to invade and he could not finish the job and was killed but his successor Claudius followed his footsteps in AD43. The wooden planks that they found during excavation are dated AD43 which was the period before they planned to conquer England and settle there. They made their first steps through Kent and then traveled throughout England. In the course of three years, the Romans finally succeeded in declaring Britain as their territory.
A Fort in Velsen covered the Northern flank, where the main forces Boulogne and Calais came. In Velsen, a group of schoolchildren first gave the evidence of a fort when they found pottery at that spot. The researches were started during the 1950s which continued to the 1960s and 1970s. In 1977 Bosman discovered some evidence like gates, walls, and some ditches and the state marked the place as an archeological state.
In 1972 another fort was discovered named Velsen which was in use from AD15 to AD30. However, the Germanic and Frisians abandoned it who belonged to the coastal regions of the Netherlands. After further digging the archeologists found a well contaminated with human remains. It is the known Roman traditional way of poisoning the water.
The presence of two nearby forts suggested that they were temporary military camps for the Romans. The two camps or forts complemented each other and were thought to be the same but the newly discovered fort is something much larger than the Velsen 1. The evidence of its size is a large number of weapons, javelins, and daggers that were found during further archeological researches.
According to an estimate, the fort can easily provide for an army of 5000 to 6000 men or maybe more. The large forte was left by the troops of Claudius in AD47. After that, the Roman kingship over Britain began to fall due to invaders.