'The men, aged between 25 and 44 and who cannot be named by order of the judge, were arrested in Sydney in 2005 as part of Australia's largest ever terror raids.
Judge Whealy said since their arrest the men appeared to wear their imprisonment as "some badge of honor."
The judge outlined in detail the group's stockpiling of chemicals and firearms and instructional, extremist or fundamentalist material found at their Sydney homes.
Police said during the trial that they found 28,000 rounds of ammunition during raids on the men's homes.
Videos showing the execution of hostages or prisoners by mujahideen, which were never shown to the jury, were "particularly brutal and graphic," Whealy said.
"It is impossible to imagine that any civilized person could watch these videos," he said.
Prosecutors said three men had gone on paramilitary-style camps in Australia's outback to prepare for an attack, but the defense said they were just hunting, camping and having fun.'