The fight against Islamic State in Iraq is raging in Tikrit, where government forces are being helped by dozens of Shia militias. One soldier in particular has gained thousands of fans online - but his story is also a revealing insight into Iran's propaganda machine.
He wields an axe, a sword and a machine gun and his battlefield pranks have become as legendary as his fighting against Islamic State - but who is the man that thousands online have called "father of the archangel of death"?
He's bald, with a prodigious beard, and often pictured with a smile on his face even when carrying his favourite weapons. A Facebook page devoted to his feats has more than 300,000 likes, with the vast majority of his fans inside Iraq itself. And he's been given the terrifying moniker Abu Azrael: "father of the archangel of death."
Of course nothing is quite so simple when it comes to the fight against IS, and basic facts about the Abu Azreal story are difficult to verify.
His real name, according to a report published Tuesday by news agency AFP, is Ayyub Faleh al-Rubaie. He says that he's fought against IS in half a dozen places, but that his experience goes back much further than the current conflict. Rubaie told AFP that he was part of the Mahdi Army - a militia that battled US forces in Iraq. He also says that he fought near Damascus against Syrian rebels trying to unseat President Assad.
In between describing his mercilessness against IS fighters, Rubaie told AFP that he is a father of five. "You see me go to school to drop off my children and I am peaceful. But I show another face to them (IS)," he says. The apparent contrast between his battlefield adventures and his seemingly ordinary background seem to be part of the appeal of his story. Al-Alam, a state owned Arabic-language TV station in Iran,reported that he used to be a physical education teacher at a university in Iraq. Al-Alam also said he's skilled in taekwondo and shooting, according to BBC Monitoring.
The Twitter account @IraqLiveUpdate reports news from the country and they too have featured Abu Azrael - posting a picture of him meeting with Iraq's transport minister. But their version of the story contradicts the idea that Abu Azreal was a university teacher. They told BBC Trending that he's actually an experienced special operations fighter.