Emperor Antoninus Pius dies and is succeeded by his adoptif sons Marcus Aurelius en Lucius Verus.

Marcomannic Wars: The Roman army in Moravia is encircled by the Quadi, who has broken the peace treaty (171). In a violent thunderstorm emperor Marcus Aurelius defeats and subdue them in the so-called "miracle of the rain".

Emperor Marcus Aurelius grant his son Commodus the rank of ''Imperator'' and makes him Supreme Commander of the Roman legions.

Marcus Aurelius dies leaving Commodus the sole emperor of the Roman Empire.