Rob was leading a convoy that was to resupply the Spanish garrison in Central Iraq, but the Spanish didn't bother to tell anybody that they'd pulled out of the town, abandoning it to the terrorists as they cut and ran from Iraq.
The convoy rolled into town the next morning and was hit by a very heavy ambush. Rob managed to get all of his men out of town and directed them into defensive positions until reinforcements could arrive, but he died as a result of wounds received during the initial ambush.