Choppers is the first documentary to follow Apache attack helicopter pilots in a war zone, and we hear them speak in detail about a job that until now has been shrouded in secrecy.

We follow the Apache helicopter crews as they take the fight to the enemy in Helmand Province. The Apache is the deadliest, most technologically advanced attack helicopter in history and it costs £46m per aircraft.

Together with the Chinook helicopter crews who fly to rescue injured soldiers, the crews talk about what it is really like to wage war from above in Afghanistan, which is, for them, as dangerous, brutal and raw as war ever gets.

Apache pilots describe the moment before they pull the trigger and how they try to stay emotionally detached from what they're doing: killing.  And we follow them as they fly on operations into the 'Green Zone', to hunt Taliban.

The Chinook medical rescue missions emphasise the alarming number of troops being blown up by Improvised Explosive Devices. And we’re there as Chinooks race again and again to the rescue of yet more casualties of war.