Marcus Otho was Roman emperor for three months, from 15 January to 16 April 69. He was the second emperor of the Year of the Four Emperors. Inheriting the problem of the rebellion of Vitellius, commander of the army in Germania Inferior, Otho led a sizeable force that met Vitellius' army at the Battle of Bedriacum. After initial fighting resulted in 40,000 casualties, and a retreat of his forces, Otho committed suicide rather than fight on, and Vitellius was proclaimed emperor.
Aulus Vitellius was Roman Emperor for eight months, from 19 April to 20 December AD 69. Vitellius was proclaimed emperor following the quick succession of the previous emperors Galba and Otho, in a year of civil war known as the Year of the Four Emperors. His claim to the throne was soon challenged by legions stationed in the eastern provinces, who proclaimed their commander Vespasian emperor instead. War ensued, leading to a crushing defeat for Vitellius at the Second Battle of Bedriacum in northern Italy. Once he realized his support was wavering, Vitellius prepared to abdicate in favor of Vespasian. He was not allowed to do so by his supporters, resulting in a brutal battle for Rome between Vitellius' forces and the armies of Vespasian. He was executed in Rome by Vespasian's soldiers on 20 December 69.
The Revolt of the Batavi took place in the Roman province of Germania Inferior between AD 69 and 70. It was an uprising against the Roman Empire started by the Batavi, a small but militarily powerful Germanic tribe that inhabited Batavia, on the delta of the river Rhine. They were soon joined by the Celtic tribes from Gallia Belgica and some Germanic tribes.