Valentinian II
Tension between Arbogast and Valentinian II reached its height in 392 when Valentinian II dismissed Arbogast from his seat of power. According to Zosimus, after receiving the order of dismissal from Valentinian II, Arbogast states "You have neither given me my command nor will you be able to take it away," and promptly threw the order to the ground and walked out. Soon after this encounter, Arbogast and Valentinian II met again in the palace of the Emperor and began a discussion which soon escalated into a confrontation between the two, ultimately resulting in Valentinian's attempt to stab Arbogast with a sword belonging to the man-at-arms beside him, which was prevented by the latter. Whether or not the account of Philostorgius is true, shortly afterward on May 15, 392, Valentinian II was found hanged in his sleeping quarters with suicide claimed as the cause of death by Arbogast. According to Ambrose of Milan, the body of Valentinian II was sent by Arbogast to Milan for a proper funeral, and four months later in August 392, Arbogast nominated Eugenius, a Roman teacher of rhetoric, as the next emperor in the West.