Germanicus assumed several military commands leading the army in the campaigns in Pannonia and Dalmatia. He is recorded to be an excellent soldier and inspired leader, loved by the legions. In the year 12 he was appointed consul after five mandates as quaestor.
After the death of Augustus in 14, the Senate appointed Germanicus commander of the forces in Germania. A short time after, the legions rioted on the news that the succession befell on the unpopular Tiberius. Refusing to accept this, the rebel soldiers cried for Germanicus as emperor. But he chose to honor Augustus' choice and put an end to the mutiny, preferring to continue only as a general. In the next two years, he subdued the Germanic tribes east of the Rhine, and assured their defeat in the Battle of the Weser River in 16. Whilst on the Rhine frontier, Germanicus found the remains of the three legions massacred in the Battle of the Teutoburg Forest in 9 AD (the seventeenth, eighteenth and nineteenth legions), buried them with high honors and recovered the legion's eagles.
After the victories in Germania, Germanicus was sent to Asia, where in 18 he defeated the kingdoms of Cappadocia and Commagena, turning them into Roman provinces.
In the following year, Germanicus died in Alexandria, Egypt. His death his surrounded with speculations and several sources refer that he was poisoned by Gnaeus Calpurnius Pisus, governor of Syria, under orders of the emperor Tiberius. This was never proven and Pisus was afterwards executed for murder, but Suetonius suggests Tiberius' jealousy and fear of his adopted son's popularity and increasing power as a motive.
See also: Julio-Claudian Family Tree