Two men who struck a man with a bottle while on a train between Carnoustie and Monifieth, leaving him permanently disfigured, were sentenced at Dundee Sheriff Court.
Kyle Lappin, 21, of Lomond Court, Coatbridge, and Stuart Roy, 41, of HMP Perth, were found guilty of assaulting a man on board a train heading from Aberdeen to Glasgow.
They were charged with punching and kicking a man, as well as striking him on the head with a bottle to his injury and permanent disfigurement.
Roy was found guilty of a further offence of striking another man in the head with a bottle to his severe injury during the journey on December 20 2013.
The court heard Lappin was a first-time offender while Roy was out on licence at the time of the offence.
Lappin had given evidence during the trial but the jury did not believe the attack was in self-defence.
Sheriff George Way said he did not think the complainers were entirely without fault in the incident.
He added that he was concerned as Roy was on licence for a previous bar brawl at the time and had only recently had a curfew restriction lifted.
The court heard other passengers on the train had been affected by the incident.
Sentencing Roy to return to prison, Sheriff Way said: “The public has the right to expect that when someone is released on licence when they should be in prison and they commit another offence something will follow on from that.
“There appears to be an element of provocation in this case but there would appear to be triggers in Mr Roy’s mind and when these triggers are sprung very bad things happen.”
Roy was returned to prison to serve 200 days, the remainder of his previous sentence, plus 255 days for the train assault.
He will serve a total of just under 18 months in total.
Lappin was sentenced to a community payback order with 14 months’ supervision and 250 hours unpaid work that must be completed within six months.
He was also ordered to pay £900 compensation.