is this wall used in modern days?
Yes.
Shield wall
Although obsolete as a military tactic due to firearms and explosives, a wall of riot shields remains a common formation for police worldwide for protection against large groups using improvised weapons, punches, kicks, and thrown objects such as bricks, bottles, and Molotov cocktails.
who is reginald de warenne? He was an Anglo-Norman nobleman and royal official. what royal service was he a part of? He was a royal justice. can you name some of his family members? Son of William de Warenne and Isabel de Vermandois. did any of them had royal title? William de Warenne, the second earl of Surrey. what can you tell about this rank? It is a title in the Peerage of England that has been created five times. It was first created for William de Warenne, a close companion of William the Conqueror. can you name some of these earls? No. where was the conqueror that you mentioned born? Falaise, a Duchy of Normandy. which place was he reigning? England. did any battle take place during his reign? Yes, the Battle of Hastings. who won this battle? William The Conqueror. can you give one example of the tactics used by either of the troops? The English soldiers formed up as a shield wall along the ridge and were at first so effective that William's army was thrown back with heavy casualties. was this tactic used in the ancient history? UNANSWERABLE
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Shield wall [SEP] Use in modern times
Although obsolete as a military tactic due to firearms and explosives, a wall of riot shields remains a common formation for police worldwide for protection against large groups using improvised weapons, punches, kicks, and thrown objects such as bricks, bottles, and Molotov cocktails.