Unfortunately, we know little about the Germanics in those days,and what we know comes from Roman sources. The archaeologists have found only very little in the Seven Mountains from the Roman era.
After Caesar’s victory, Germania disappeared for a while from the Roman historians’ field of vision; during the next years, their attention was caught by the civil wars within the Empire.
The time of the Soldier Emperors (235-284/85) is considered as a time of crisis, many historians speak of the crisis of the third century. The ongoing, forcibly brought about change on the Imperial throne did not allow the Roman Empire to get some peace.