Prince Philip first met the Queen at the Royal Navy's officer training establishment - because of a mumps outbreak.
Details and rare photographs of the historic first meeting at Britannia Royal Naval College in Devon have been shared on social media by the Ministry of Defence (MoD).
On Twitter, a spokesperson said: "In 1939, HRH The Duke of Edinburgh met Her Majesty The Queen for the first time at Britannia Royal Naval College.
"The photos showcase the time that the then Prince Philip of Greece and Denmark was tasked to look after Princess Elizabeth after there was an outbreak of mumps which excused them from going to church.
"Among the rare photographs is one of Princess Elizabeth and Prince Philip playing croquet.
"These photographs were found in the private family album of the then Captain of the College Capt F Dalrymple-Hamilton. The photo album came into the Britannia Royal Naval College’s possession pre-1980.
"HRH The Duke of Edinburgh and Her Majesty The Queen were married for 73 years, with their wedding taking place in November 1947.
"The longest-serving British consort, HRH Prince Philip stepped down from the Royal Navy in 1952 to assist with royal duties."
Earlier today it was reported that members of the royal family will now not wear military uniform at the Duke of Edinburgh’s funeral.
It is understood the Queen has decided that senior royals attending the service should be in civilian clothing.
The move means the Duke of Sussex will not have to face being one of the only close family members who is not in uniform at Saturday’s service.
Harry lost his honorary military titles after deciding to step down as a senior working royal.