Islamic State may exult in online portrayals of jihadis sweeping victoriously across Iraqi battlefields, but a camera recovered from the helmet of a dead fighter offers a contrasting picture of chaos and panic in a battle with Kurdish peshmerga.

A fighter named Abu Hajer is shown in footage seized by Peshmerga firing from one of three Islamic State armored cars advancing across a barren plain toward a Kurdish position. His rifle slips and he fires off a shot inside the vehicle.

"Abu Hajer! Stop firing!" shouts Abu Radhwan, the camera in his helmet picking up anguished faces as it swings erratically from views of rifles and munitions on the floor of the armored car to the brown fields and blue sky ahead.