He said: "Quite simply, these men and women are prized assets which need to be continually invested in. It is just as much about mental fitness too", Harry said.
Britain's Prince Harry said on Monday the mental health of serving soldiers was as important as ensuring they were ready to take part in conflicts. "But in many ways I have learned more about the sacrifices our servicemen and women make for us all since I left the army and continued my work with the Invictus Games".
As they renewed their acquaintance at the reception for supporters of the royals' Heads Together mental health campaign, Cooper, an assistance dog who has met Harry several times, climbed on to the prince's chest, as Harry crouched down, and gave him a friendly lick.
Protecting the United Kingdom from Cyber Attacks is just as important as fighting terrorism, according to the Director of Intelligence Agency GCHQ.
In a speech at the Ministry of Defence, the 33-year-old prince, who spent 10 years in the army, said that as the number of active-duty personnel had been reduced there was a premium on "every individual being fighting fit and deployable".
Harry described the new initiative as, "providing tools and information that will help everyone in the Defence community to get ahead of some of these problems before they start".
The MoD said the move will build upon a recently launched Government strategy aimed at improving mental health in current military workers, civilian staff, their families and veterans.
He was shown a collection of data visualisations from the biggest ever series of surveys on mental health involving 14,000 members of the British public.
It also attracted high-profile support from the likes of Lady Gaga, Professor Green, Ruby Wax, Alastair Campbell and Theresa May.
William, a former helicopter pilot, added: "Harry had seen that it wasn't enough to help veterans recover from their physical injuries without acknowledging the emotional and mental support they required".
Before musing, "But I think it all has to start at home. If you can't have a conversation with your loved ones, there's no way you're going to go to HR at work", he said.
As a parent, he also wants to tackle the problem from the very beginning.