AT work, Australia's latest Victoria Cross winner Ben Roberts-Smith is a lethal warrior, an elite, super fit and highly skilled killing machine.
But when he comes home he is a husband and a dad, happy to be with his wife Emma and frolic with twin daughters Elizabeth and Eve.
In fact, the strangest thing about his job is switching between the two roles, when he goes from killer to carer.
Corporal Roberts-Smith said it takes about two days to morph back to just Ben when he returns from a mission.
"When you come back from an operation you literally flick a switch, and within the space of two days you are back at home sitting at the table having dinner with your family," he said. "And then two weeks later you're deployed to a new theatre."
Speaking to Channel 7's Sunday Night program, the SAS corporal confirmed for the first time he and his four special forces comrades were victims of an intelligence failure, outgunned and outnumbered four to one when they went after an Afghan Taliban insurgent chief on June 11, 2010, a mission that led him to being awarded his VC medal.
The tattooed man-mountain, almost 2m tall with the body of a rugby forward, said he and his comrades on the "hunter-killer" mission in Tizak, in northern Kandahar, had no idea there'd be 10 Taliban commanders and bodyguards with their "target".
Their mission was to kill the Taliban boss, but it became a deadly day-long survival test.
"We didn't realise what we'd come up against and in the end it was basically four to one odds. And we were certainly out-positioned and out-gunned," he said.
In a candid interview, Cpl Roberts-Smith dismissed the dangers he faced in the 13-hour long battle.
Even now, he doesn't fear death and is happy to put his life on the line often to make Australia a better place for his 18-month-old daughters.
"To have the girls was easily the best day of my life - it took us a long time to have the kids," he said.
"(Our mission is) important because it needs to be done and there's no one else that's going to do it."
When asked if he was prepared to die he said: "Very much so ... I don't mean that in a theatrical sense, or I'm not being silly about it. I know what we are doing is actually stemming the flow of terrorism into this country.
"I think if I go away and I was to get killed on the next trip, and that was the way my life was meant to play out, then so be it. At least I've done it serving my country. And making this country that we love, all of us, a better place for our children."
The nation's most decorated soldier, who also won the Medal for Gallantry in 2006, came close to death numerous times during the VC mission. He first realised that his patrol might be in trouble when the US Blackhawk they were flying in began to take heavy fire from the ground.
Then an insurgent fired a rocket propelled grenade (RPG) that passed just below his feet as he hung out of the helicopter.
"That's probably the most vulnerable I felt all day because you are not in control," he said.
Once on the ground the Diggers were pinned down by fierce machine gun and small arms fire and it was clear to him that if he didn't act then one or more of his mates would be killed. They got to within 70m of the compound and were in a fig orchard with limited cover when he made his move.
"It just came down to the point that someone had to do something," he said.
"I wasn't going to sit there and do nothing and just watch my mates die rather than be me and have to face their families if they died ... anyone else would have done ... the same thing. I was able to move forward so I ran at the wall."
After killing an RPG-toting insurgent fighter, Cpl Roberts-Smith took out two enemy machine gunners in the main compound after a third was killed by a hand grenade his patrol commander threw.
By the time the smoke had cleared he and his patrol had killed 22 insurgents and captured five heavy machine guns and other weapons and ammunition.
Cpl Roberts-Smith, who has been a soldier since 17, does not dwell on the numbers he killed. That his patrol mates survived is what matters.
"Killing isn't winning. Winning is achieving your objective, bringing everyone home alive. If we'd lost one bloke that day I probably wouldn't be sitting here right now. You lose one guy then you've lost. It's not a win."