Killing of detainees "became routine
some troops had a "mob mentality", describing their behaviour on operations as "barbaric".
show serious psychopathic traits
"They were lawless. They felt untouchable."
the SAS and SBS were making their own rules,
we'd go in with the intention of killing them, there was no attempt to capture them,
"Sometimes we'd check we'd identified the target, confirm their ID, then shoot them," he said. "Often the squadron would just go and kill all the men they found there."
killing could become "an addictive thing to do"
"intoxicated by that feeling" in Afghanistan. There were "lots of psychotic murderers", he said.