Not only there to pay tribute to his mother and highlight the remarkable work she undertook with The HALO Project to rid the world of landmines, Harry used the opportunity to further his mum's mission.
"Despite great progress, 60 million people worldwide still live in fear of landmines every day," was the message shared on the young royal's Instagram feed.
There is absolutely no question that Diana's work made a difference, HALO Angola's Operations Manager Valdemar Goncalves Fernandes told CNN.
"The results we have now is because of Diana's input. She made the donors aware that the international community is also part of this problem and that they could help.
"We don't produce ammunition and mines in Angola."
The day before his visit to the place his mother had once walked, Harry spoke about his fondness for Africa, and how he'd found solace in Botswana soon after his mum's tragic death.
"Fifteen years I've been coming here, it's a sense of escapism, a real sense of purpose," he told Sky News reporters.
"I have some of my closest friends here and I came here in 1997 or 1998 straight after my mum died, so it was a nice place to get away from it all. But now I feel deeply connected to this place and to Africa."
The Duke of Sussex began his first day in Botswana by helping a group of locals plant a 10-metre tall tree as part of an effort to create a new forest habitat on the banks of the Chobe River.
He also helped a group of schoolchildren to plant mahogany tree saplings as part of a project to turn land that was once privately owned but has now been pledged to the local community into a nature and cultural reserve.
The project is being spearheaded by Elephant Without Borders, a conservation group founded by Harry's close friend Dr Mike Chase, along with another local organisation.
Meanwhile, his wife Meghan Markle – who remained in South Africa with the pair's four-month-old son, Archie Mountbatten-Windsor – was impressing fans of her own.
Attending the 'Ladies Who Launch' event at the Woodstock Exchange, Meghan found herself confronted by crowds of well-wishers and fans who sang to her as she passed them by, waving and smiling.
As she walked passed their group, around 50 women sang to her: "African queen, there's a new tomorrow, African queen, a dream we can follow" – unofficially bestowing the title of Queen on the Duchess of Sussex.