In 2004 Garth Callender, a junior cavalry officer, was deployed to Iraq. He quickly found his feet leading convoys of armoured vehicles through the streets of Baghdad and into the desert beyond. But one morning his crew was targeted in a roadside bomb attack. Garth became Australia's first serious casualty in the war. After recovering from his injuries, Garth returned to Iraq in 2006 as second-in-command of the Australian Army's security detachment in Baghdad. He found a city in the grip of a rising insurgency. His unit had to contend with missile attacks, suicide bombers and the death by misadventure of one of their own, Private Jake Kovco. Determined to prevent the kinds of bomb attacks that left him scarred, Garth volunteered once more in 2009 to lead a weapons intelligence team in Afghanistan. He was helicoptered to blast zones in the aftermath of attacks, and worked to identify the insurgent bomb-makers responsible.