How did the influx of germanic tribes into the empire and the areas around it affect the empire?

At the point when Germanic tribes attacked into the Balkans, Gaul, and Spain, the Roman Empire had issues in enrolling enough officers to battle against the burdens from the tribes. In the mid-third century, the state was compelled to utilize Germans from outside the Empire to attack the influx of tribes. The troopers were just willing to work for pay since they didn't recognize Roman cultures or traditions nor did they have any devotion to the Empire.

Where are the statements, only the paragraph is here