From The Daily Mail:

The Iraqi government policemen and soldiers in Mosul abandoned their weapons and uniforms with barely a fight against the army of black-clad killers from the Islamic State of Iraq and the Levant (ISIL) terror group.

The gunmen quickly laid their hands on a mass of abandoned U.S. military equipment to add to their massive arsenal, ranging from Humvee vehicles to night-sights and body armour.