Editing Quintus Sertorius (section)

=== Service under Gaius Marius ===
[[File:Marius Chiaramonti Inv1488.jpg|thumb|1st century BC marble portrait bust thought to be of Gaius Marius.  ]]
Serving under [[Gaius Marius]], sometime between the autumns of 104 and 102&nbsp;BC, Sertorius spied on the Germanic tribes that had defeated Caepio, probably disguised as a [[gauls|Gaul]].{{sfn|Konrad|1994|pp=46,47}} Marius may have sought Sertorius (and other survivors of Arausio) out due to their experience fighting against the Germans, as he likely wanted information regarding enemy tactics and movements.{{sfn|Spann|1987|p=16}} Sertorius probably did not know enough of the German languages to comprehend detailed information, but could report on their numbers and formations: "after seeing or hearing what was of importance", he returned to Marius.{{sfnm|Spann|1987|1p=15|Plut. ''Sert.''|2loc=3.2}} 

Sertorius became well-known and trusted by Marius during his service with him.{{sfn|Konrad|1994|p=48}} He almost certainly fought with his commander at the [[Battle of Aquae Sextiae]] (now [[Aix-en-Provence]], [[France]]) in 102&nbsp;BC and the [[Battle of Vercellae]] in 101&nbsp;BC, in which the [[Teutons|Teutones]], [[Ambrones]], and [[Cimbri]] were decisively defeated.{{sfn|Konrad|1994|p=47}} Some scholars believe that Sertorius' tactics and strategies during his revolt in Hispania greatly resembled those of Marius, and conclude that Sertorius' earlier service under Marius was an important learning experience.{{sfn|Spann|1987|p=17. Spann believes that both men were "cautious, circumspect sticklers for training and discipline", and shared a "keen appreciation for the tactical details of warfare"}} What Sertorius did for the next three years is unclear, but he probably continued to serve in the military.{{sfn|Spann|1987|p=18 discusses possible postings}} Sertorius eventually travelled to [[Hispania Citerior]] to serve its governor, [[Titus Didius]], as military [[tribune]] in 97&nbsp;BC.{{sfnm|Spann|1987|1pp=18-19|Konrad|1994|2pp=48-49}}