 His consulship conferred the chance for Drusus to attain Rome's highest and rarest military honor, the "spolia opima", or spoils of an enemy chieftain slain personally by an opposing Roman general who was fighting (as consuls did) under his own auspices.He quickly returned to the field, stopping to confer with his staff at Lugdunum and to dedicate a temple to Caesar Augustus at Andemantunnum, before rejoining his command at Mainz, from which the year's expedition departed in early spring.Drusus led the army via Rödgen through the territories of the Marsi and Cherusci until he even crossed the river Elbe.