Prince Harry
The prince will celebrate his 31st birthday while attending the Battle of Britain 75th anniversary.Reuters / Paul Childs Livepic

Prince Harry will be returning to the UK following three months in Africa to celebrate his 31st birthday on 15 September. He will return to his royal duties and will be attending the Battle of Britain 75th Anniversary flypast on his birthday.

According to Hello!, Harry will be joining members of the Endeavour Fund for the flypast at Goodwood Aerodrome. The Endeavour Fund was established by the Royal Foundation to aid in the recovery of wounded and ill service personnel.

Vanity Fair reported that the former Army captain and helicopter pilot will be spending the day with World War II veterans "checking our vintage airplanes" to commemorate the anniversary of the Battle of Britain.

The event, hosted by the Boultbee Flight Academy, will reportedly unite more aircraft from the battle than have been assembled since the war. An estimated 40 Spitfires, Hurricanes and Blenheims from the UK, US and Europe will participate in the flyover WWII airfields. However, it remains unclear whether Harry will be flying any airplanes himself.

Once back in the UK, Harry will have time to make up for missed events with his family and friends, including the christening of his niece Princess Charlotte on 5 July. The 30-year-old prince is expected to work as a volunteer with the Personnel Recovery Unit of London, Hello! reported. Harry will also participate in several royal engagements in the US, South Africa and Lesotho.