Cohors I Ubiorum was a Roman auxiliary cohort.
The cohort was at one point or another stationed at Calidava/Calidaua (modern day Capidava in Romania).
The unit likely played a role in maintaining Roman control over the area and in defending the Roman frontier against incursions by Germanic tribes.
The cohort likely played a role in maintaining Roman control over the region.
This article about the military history of ancient Rome is a stub.