The exact message from the Pentagon to ISIS‘ tanker drivers just before U.S. warplanes decimated the terrorist army’s oil convoys last November has been revealed.

Text of leaflets dropped before bombing began, warning truck drivers to run for their lives, was released in response to a Freedom of Information Act request by the blog War is Boring.

“Warning. Airstrikes are coming, oil trucks will be destroyed,” read one leaflet. “Get away from your oil trucks immediately. Do not risk your life.”

“Oil trucks are being destroyed because buying this oil is the lifeblood of Da’ish. Leave the trucks and flee,” read another, using the Arabic term for the Islamic State.

U.S. Air Force A-10 ground attackers and AC-130 gunships took out hundreds of oil-hauling trucks in northern Iraq and eastern Syria that were a key part of a smuggling operation that brings the group an estimated $1.4 million a day.

One leaflet showed an image of a U.S. fighter jet flying low toward an oil tank, with the drivers running from the site. It was reportedly created before the attack from a drill. Another included a map of the region and prominently marked the oil fields in eastern Syria.

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