I went to the website for the Clark County courts
State of Nevada vs War Machine
1. ATT. BATTERY WITH SUBSTANTIAL BODILY HARM (FELONY)
He entered a guilty plea 09/29/2011.
Given that the date of incidence is right around the gay nightclub assault, and the website shows WM is a co-defendant in a civil suit with the same nightclub, I'd say we've found out what the sentencing is for.
A quick skimming makes it look like he could have been sentenced to up to five years. I can't be too surprised that he got a year (the minimum for the conviction, though I'm sure it could have been suspended if the judge wanted to) given his long history of battery. His pre-sentencing report was probably pretty ugly.