"It is just as much about mental fitness too". "We surely have to think of them as high-performance athletes, carrying all their kit, equipment and a rifle", he said.
"This is what the partnership between the MoD and the Royal Foundation is all about -placing mental fitness and mental health at the heart of the training and support provided to the entire defence community". And we are delighted to be providing the seed funding for this new digital start-up that we hope will create new tools that will enable people to have conversations on mental health wherever they are and whenever they need to have them.
John White, a former Royal Marines officer who lost both legs and his right arm in an explosion in Afghanistan and is project managing the new initiative, said the idea was to catch a problem before it became "a full blown mental illness".
The partnership is the latest in a series of royal efforts to promote greater understanding and openness around mental health through the work of the Foundation's Heads Together campaign, launched in May previous year.
The surveys suggested that a total 1.5 million more people (3%) were talking about mental health in May compared to February 2017, when the surveys were launched, with a 12% increase in the number of those admitting to talking about their own mental health.
"I feel like it's exam results day", he laughed.
Transgender people are disproportionately likely to face mental health challenges. It is an issue richly deserving of their support, and one which everyone concerned with society's welfare should also back.
Discussing the statistic that three quarters of suicides in the United Kingdom are men, he stated: "That's still a worrying statistic though, it really is".
The Duke added: "At the beginning, we were trying to understand why at home people weren't sharing some of their problems".
"When we work together, we are greater than the sum of our parts".
He said: "I remember my time in the armed forces, I did a little bit of bayonet training then we were told to think about the consequences of stabbing a sandbag, and that was as close as we got until the next step and we're on the battlefield".
"You'd struggle to find a parent out there who wouldn't want the well-being of their child to be taken care of at school".