He was ordered to accompany Marcus and Verus to Germany as the court physician .
During the autumn of 169 when Roman troops were returning to Aquileia , a great plague broke out , and the emperor summoned Galen back to Rome .
Galen was ordered to accompany Marcus and Verus to Germany as the court physician .
During the autumn of 169 when Roman troops were returning to Aquileia , a great plague broke out , and the emperor summoned Galen back to Rome .