Roman civil war of 432
With her decision in 432 to deprive Aetius of his command of the Roman army in favor of Boniface, she effectively created the basis for the arise of this conflict.After this, Aëtius, who supported John, was promoted away to the province Gallia and Boniface, a follower of Galla Placidia, ended up on a sideline.This was the junior rank of the two functions of comes et magister utriusque militiae, whose senior position was held by Felix, who was thus the most influential man in those years, and also a supporter of Galla Placidia.[3] After Bonifatius had left Ravenna in 429 to reconcile with Galla Placida, he returned to North Africa to campaign against the Vandals.In the Battle of Calama, the Romans were defeated by the Vandals in early 430, after which Bonifatius withdrew to the city of Hippo Regius which was besieged from May 430.After 14 months of siege, Bonifatius left the city to the Vandal King and withdrew to join forces with the East Roman general Aspar, who arrived from Constantinople with an army by sea.In addition, she gave him the senior comes et magister utriusque milities (commander-in-chief) position, while Aetius was deprived of his military command.Aëtius had brought his own army from the West that he originally intended to deploy to the Suebi in Spain, while Bonifatius had some of his troops from Africa with him, most bucellarii and the Italian fieldarmy.