The Senate, showing its hostility towards Maximinus by supporting the Gordiani, elected Pupienus and Balbinus as joint emperors. These senators were not popular men, so the Senate decided to raise Marcus Antonius Gordianus to the rank of "Caesar". Maximinus, moving quickly to attack the senate's newly elected emperors, encountered difficulties marching his army through an Alpine winter. Arriving at Aquileia and short on supplies, Maximinus besieged the city. After four weeks, Maximinus' demoralized army mutinied and the Legio II Parthica murdered him.