Completed the following sentence: During the winter of 54<unk>53 BC, returning from an expedition in Britain, Caesar wintered with three legions at Samarobriva. During the winter of 54<unk>53 BC, returning from an expedition in Britain, Caesar wintered with three legions at Samarobriva. When Vercingetorix was taken:
52 BC, the Ambiani sent 5,000 men.