 The next year, 16 AD, still on campaign with Germanicus in Germania, Caecina was entrusted with the task of building a fleet of 1,000 ships to transport the Roman armies from the North Sea into the interior of Germany via the River Ems, a task which he completed.It is assumed that he marched alongside Germanicus during this campaign, and returned with Germanicus to Rome at the end of the year.Taking his place in the Senate, Caecina put forward a motion in 20 AD that an altar be erected to the goddess of vengeance giving thanks for what was termed the righteous death of Gnaeus Calpurnius Piso, who was widely believed to be responsible for the death of Germanicus in 19 AD.