In early 92, the Iazyges, in alliance with the Sarmatians proper and the Germanic Quadi, crossed the Danube into the Roman province of Pannonia (mod. Croatia, northern Serbia, and western Hungary).
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In the summer of 166, while the Romans were tied down in a war with Parthia, the peoples north of the Danube, the Marcomanni, the Naristi, the Vandals, the Hermanduri, the Lombards and the Quadi, all swept south over the Danube to invade and plunder the exposed Roman provinces.
Iazyges |
On 3 August 178, Praesens was one of those who accompanied Marcus and the young Commodus on the so-called 'expeditio Germanica secunda' against the Quadi, Iazyges and Marcomanni, and received military decorations for his part in the campaign.
Nevertheless, operations continued against the Iazyges, the Buri and the so-called "free Dacians" living between the Danube and Roman Dacia.