When was the Roman invasion of Britain?

Julius Caesar was the first Roman to invade Britain. He attempted to do so twice. The first was in 55BC this was a failure, as Caesar was unable to hold his position and was forced to withdraw. The second was a partial success and resulted in setting up a Roman friendly king, Mandubracius and forcing the tribes of eastern England to pay tribute to the Romans.

The third and true invasion of Britain was in 43 AD and was ordered by Emperor Claudius, in part to win an easy victory for Claudius to solidify his position as the Roman emperor.

The invasion was run by general Aulus Plautius who was given command of twenty thousand men (four legions). These legions were Legio II Augusta, Legio IX Hispana,Legio XX Valeria Victrix and Legio XIV Gemina