In 217 the unstable Caracalla was...
Elagabalus reigned for just under 4...
Over the 210s and 220s Gadarat...
Buoyed by his victory at Hormozdgan,...
Over the 220s the Sasanian Persians...
In the wake of the Persian invasion...
In 231 Ardashir I led the Persians...
Following his Persian campaign,...
In 235 the Rhine legions killed the...
To pay for his military campaigns,...
When the Roman Senate learned that...
The usurpation of Gordian I was...