300-399 (Abrittus)

303
Gaul: Sparked by the introduction of a Wine Excise which threatened the local economy, protesters in Gallia Narbonnensis demand a democratisation of political procedures in Gaul after the Roman example. An unauthorised provincial Comitia forms and organises the resistance. Gaul´s emperor Constantius sends a legion to quash the rebellion. The Narbonnensis Comitia appeals to Rome for help. The Senate hesitates.

Roman Empire: Constantine becomes Rome´s first Christian emperor. Although without much factual power, he throws in all his charisma to sway public opinion to support the republican movement in Narbonnensis (in which trinitarian apostolic = Roman Catholic Christians play a vital role) at least infrastructurally.

304
Gaul / Roman Empire: After imperial troops committed a bloodbath among republicans in Narbo, Roman public opinion finally favours an intervention, which at first aims only at defending Antipolis, which is under siege. As Constantius declares war on Rome, more legions are sent.

Rome quickly manages to conquer the eastern half of Gallia Narbonnensis. After a decisive battle near Tarasco, Roman legions cross the Rhodanus river and occupy the Western part of the province, too.

Celtic reinforcements are sent in from the North. After a battle at Segodunum ends inconclusively, both sides dig in. In autumn, Constantius and Constantine sign a peace treaty. Gallia Narbonnensis becomes a Roman province with a democratic Comitia, but it becomes Rome`s first demilitarised province. The general draft does not apply to Narbonnensian Celts and no legions are to be stationed or even moved there.

311
Saba / Persia: After Saba has conquered the entire southern half of the Arabian peninsula, conflicts with the Sassanid empire over who controls the Strait of Hormuz erupt. Beginning of the first Saban-Persian war.

312
Saba / Persia: The first Saban-Persian war ends with the Sassanids defeated, having been unable to use their superior ground forces, losing several naval battles. Although the treaty asserts Saban control over the Strait of Hormuz and imposes limits on the Persian navy, shah Shaipur II. starts a secret naval build-up.