[quote=@Vilageidiotx]
Vitellius was one of the four-Emperors if I recall right. Was his contribution to future rebellions because he was an early abuser of military coups in the Imperial era, or did he do something else? Because surely he wasn't Emperor very long...
[/quote]

He was the first imperial general to attempt a coup using legions from the frontier, and he succeeded. Shortly afterwards the idea was copied by Vespasian's supporters and a whole bunch of Gauls.

I think what I'm trying to say is that it wasn't a very good essay