The young prince is currently on a tour of duty with his British Army colleagues in Helmand Province, where he is serving as an Apache helicopter co-pilot gunner.
Taliban chiefs have vowed to kidnap and kill the British royal, and his father has now spoken of his fears for his son's safety while he is in a warzone.
He tells British TV show This Morning, ""If you are a parent or relation to a loved one and that person is away in these incredibly dangerous and challenging circumstances, I know you worry all the time. Certainly every night I worry. But he loves doing what he's doing and he's brilliant at it... I constantly meet the families of those who have lost their sons, husbands, brothers or sisters... and I have some understanding at least of what they go through.""
Prince Charles, a committed environmentalist, also told of his desire to save the planet for the sake of future generations now he is set to become a grandfather to his son Prince William and wife Catherine, Duchess of Cambridge's first child.
He adds, ""We don't, in a sensible world, want to hand on an increasingly dysfunctional world to our grandchildren, to leave them with the real problem. I don't want to be confronted by my future grandchild and them say: 'Why didn't you do something?' So clearly now that we will have a grandchild, it makes it even more obvious to try and make sure we leave them something that isn't a total poisoned chalice.""