Britain's Prince Harry meets landmine victim Sandra Tigica, who Princess Diana met on her visit to Angola in 1997, during a reception at the British Ambassadors Residence in Luanda, Angola September 27, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry talks with troops following an anti-poaching demonstration exercise conducted jointly by local rangers and the British Army at the Liwonde National Park, in Malawi September 30, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry arrives in a safari jeep to watch an anti-poaching demonstration exercise conducted jointly by local rangers and the British Army deployed on operation CORDED at the Liwonde National Park, in Malawi September 30, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry reviews a tree sculpture made from poacher's snares recovered by park rangers, during an event dedicating the Liwonde National Park and Mangochi Forest to the Queen's Commonwealth Canopy conservation initiative at Liwonde National Park, Malawi, September 30, 2019. REUTERS/Dominic Lipinski/Pool 

Prince Harry pays tribute at the memorial site for Guardsman Mathew Talbot of the Coldstream Guards at the Liwonde National Park in Malawi September 30, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry speaks to Angeline Murimirwa, the Executive Director for CAMFED in Africa, during his visit to Nalikule College of Education in Lilongwe, Malawi, September 29, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry visits the Nalikule College of Education to learn about the CAMA network and how it is supporting young women, in Lilongwe, Malawi, September 29, 2019. Dominic Lipinski/Pool via REUTERS 

Meghan is seen via Skype while Prince Harry visits the Nalikule College of Education in Lilongwe, Malawi, September 29, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry, Duke of Sussex, visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Harry followed in his late mother's footsteps on Friday, wearing a protective vest and visor during a visit to a de-mining project in Angola that echoed a famous series of images taken of Princess Diana more than 20 years ago.

Dominic Lipinski/Pool via REUTERS 

Princess Diana (L) walks in one of the safety corridors of the land mine fields of Huambo, Angola January 15, 1997, while Prince Harry (R) visits a working de-mining field in Dirico, Angola September 27, 2019. Harry visited a de-mining field outside Dirico, a town in Angola's Cuando Cubango province, where, wearing a safety vest, he remotely detonated a mine in a controlled explosion. He also met community members.

REUTERS/Juda Ngwenya/Dominic Lipinski/Pool 

Harry sits alone beneath the Diana Tree in Huambo, Angola September 27, 2019. He retraced his mother's steps on a street that was once a path in a dangerous minefield. The 35-year-old walked down Princess Diana Street and sat beneath the Diana Tree, the spot where his mother, who campaigned for a global ban on mines, was photographed.

REUTERS/Dominic Lipinski/Pool 

"It has been emotional retracing my mother’s steps along this street 22 years on, and to see the transformation that has taken place, from an unsafe and desolate place into a vibrant community of local businesses and colleges," Harry said. "But let us not lose sight of the reality. Twenty two years after my mother visited Angola, there are still more than 1,000 minefields in this beautiful country that remain to be cleared. I wonder if she was still alive whether that would still be the case. I’m pretty sure she would have seen it through."

Dominic Lipinski/Pool via REUTERS 

Prince Harry remotely detonates a landmine as he visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. The pictures of Diana wearing protective gear as she walked among red skull-and-crossbone signs in Huambo in January 1997 won publicity for the HALO Trust, which was clearing mines left during Angola's civil war. They were taken a few months before her death in Paris in a car crash. The international treaty to ban the weapons was signed later the same year.

Dominic Lipinski/Pool via REUTERS 

Prince Harry and Halo Regional Manager Jose Antonio watch as Mine Clearer Jorge Joao Cativa demonstrates mine clearing techniques, September 27, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry visits a working de-mining field with the HALO Trust in Dirico Province, Angola, September 27, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry meets Barnaby Jose Mar, 6, as he visits the Princess Diana Orthopaedic Centre in Huambo, Angola September 27, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry examines a prosthetic leg as he visits the Princess Diana Orthopaedic Centre in Huambo, Angola September 27, 2019. Dominic Lipinski/Pool via REUTERS 

Princess Diana talks with war veterans at the Orthopedic Neves Bendinha in Luanda, Angola January 14, 1997. REUTERS/Jose Manuel Ribero 

Prince Harry meets patients as he visits the Princess Diana Orthopaedic Centre in Huambo, Angola September 27, 2019. Dominic Lipinski/Pool via REUTERS 

A crowd gathers on Princess Diana Street ahead of the arrival of Prince Harry in Huambo, Angola September 27, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry helps a local schoolboy to plant a tree at the Chobe National Park in Botswana September 26, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry helps a local schoolboy to plant a tree at the Chobe National Park in Botswana September 26, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry and a founder of Elephants Without Borders, Dr Mike Chase, are welcomed to a tree planting event by local children, at the Chobe National Park, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry helps to plant a tree at the Chobe National Park in Botswana September 26, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry helps to plant a tree at the Chobe National Park in Botswana September 26, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry is greeted by Tlotlo Moilwa during a visit to the Kasane Health Post, run by the Sentebale charity, in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry joins a Botswana Defence Force anti-poaching patrol on the Chobe River in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS 

Prince Harry listens to a member of a Botswana Defence Force anti-poaching patrol, near to the Chobe river, in Kasane, Botswana, September 26, 2019. Dominic Lipinski/Pool via REUTERS