In July–August, 388, the combined troops of Theodosius I and Valentinian II invaded the territory of Maximus under the leadership of Richomeres, Arbogast, Promotus and Timasius. Maximus suffered a series of losses and surrendered in Aquileia. He was executed on 28 August 388. His son and nominal co-ruler Flavius Victor was also executed. His wife Helen and two daughters were spared. The condition for Galla's marriage had been met. However Justina died the same year, uncertain if she was able to witness the result of her efforts.