Prince Harry provides some questionable advice to Prince George and Princess Charlotte

The spare heir is yet to meet his newborn niece after she was two weeks late

Prince Harry has told of witnessing the 'horrors' of war (Getty)

Prince Harry is yet to meet his new niece, the world-adored bundle of baby flesh that is Princess Charlotte.

When he does, however, he’s got some advice for her. And her brother, Prince George, too. And we’re not entirely sure the Duchess of Cambridge is necessarily going to be a fan of it.

“I would definitely encourage George, and Charlotte if she wants to, to have some sort of involvement in the Armed Forces, guaranteed,” he told the Sunday Mirror.

“And I know that William and Catherine would probably echo that as well, depending on the situation for them in those years to come.

“It’s done no harm, just good, for me, and I know it’s the same for William. It’s hard to say anything else on that because, as a parent, it’s your choice.

“As an uncle, you know, I would say enjoy the role, because at first it’s just pressure, pressure, pressure.

“Just enjoy it and make the most of it. If you’re going to be doing it and you’re having an effect on so many people then, if you smile, they’re smiling – and what’s the point of doing such a unique job without enjoying it?”

Prince Harry is set to meet the newborn for the first time when he lands back in the UK following his tour of New Zealand and Australia.

Meanwhile, on the subject of the release of his father Prince Charles’ “black spider memos”, he said: “My father never really gets listened to, which is disappointing because whatever he says normally is right, and about 10 years ahead of when the problems ¬actually happen.

“So I think from our point of view, we want to get better understanding, better knowledge – so if we do give a speech or have a conversation, people can look at us and think, well, actually they do have a bit of background knowledge.”