Caesar's Invasion of Germania

In 55 BC, German tribes began crossing the Rhine River and running amok. Caesar was forced to put his British invasion on hold while he headed east to secure the border. In what is widely acknowledged as one of the great feats in the history of military engineering, Caesar's army designed and built a bridge across the river. The Roman public was at least as impressed with Caesar for leading a Roman army into Germania, as they were for his later invasion of Britain.