Marcomannic Wars
Marcus Aurelius, known as the Philosopher, was the last of the Five Good Emperors. He was a stoic philosopher and wrote the "Meditations". He defeated barbarian tribes in the Marcomannic Wars as well as the Parthian Empire. His co-emperor, Lucius Verus died in 169 AD, probably victim of the Antonine Plague, a pandemic that killed nearly five million people through the Empire in 165–180 AD.