Constantius and the Battle of Boulogne

In late two 93 a d just months after being made caesar, constantius launched the first of his attacks in pursuit of objective one. The keyport on the gallic coast controlled by the franks was boulogne. Constantius had his men build a dam across the harbor, cutting off any possible sea traffic. It did not take for them to recognize that their situation was hopeless and capitulate to constantiu's legions.