A 22-year-old man has been given an indeterminate prison sentence for a machete attack in Crawley town centre which left three men seriously injured.
Antonio Batsimba, from Dagenham, north-east London, was told he must serve a minimum of nine years before he can apply for parole.
He was convicted last month of attempting to murder one of the men in the attack in September last year.
He admitted inflicting grievous body harm on the other two men.
Two of the victims had serious head injuries which at the time were thought to be life-threatening.
At Hove Crown Court Judge David Rennie told Batsimba he was being given the indeterminate sentence to protect the public.
The judge said he was a "highly dangerous young man who behaved in a sickeningly violent manner".
The court was told the fight took place in Memorial Gardens.
Following the incident, Sussex detectives said it appeared to have been planned by people who knew each other, with a large number of people involved.
A number of weapons were found at the scene including knuckledusters, poles and the machete.
Det Ch Insp Jeff Riley said the two seriously injured victims may never get over Batsimba's attack on them.
"Batsimba has received a substantial prison sentence for his brutal and unprovoked attack," he said,
"I hope this sentence will act as a deterrent for others intent on using violence."
Two other men had already been given suspended jail sentences after admitting taking part in the fight.
Omair Khan and Omar Arafat, both 20, and from Crawley, pleaded guilty to causing actual bodily harm at Crawley Magistrates' Court in November.