Scotty’s Little Soldiers — a charity for bereaved military children — on Wednesday, where he detailed what it was like losing his mother, the late Princess Diana.Harry and his estranged brother Prince William’s late mother died in a car crash in August 1997 at the age of 36 while fleeing photographers in Paris.Recalling the tragedy, Harry, who was 12 years old at the time, said “things become easier” if children are able to talk about grief.Scott, for her part, recalled telling her 5-year-old son that his father, Corporal Lee Scott, had been killed in Afghanistan.“You convince yourself that the person you’ve lost wants you, or you need to be sad for as long as possible to prove to them that they are missed,” Harry said in a video ahead of Armed Forces Day. “But then there’s this realization of, no they must want me to be happy.”Scott said she broke the news of her husband’s death to her son in July 2009 while caring for her 7-month-old daughter.“It was the worst,” she told the royal.