FILE From left, Britain's Charles, Prince William and Prince Harry attend a ceremony marking the 100th anniversary of the Battle of Vimy Ridge, in Vimy, France, Sunday, April 9, 2017. The world watched as Prince William grew from a towheaded schoolboy to a dashing air-sea rescue pilot to a father of three. But as he turns 40 on Tuesday, June 21, 2022, William is making the biggest change yet: assuming an increasingly central role in the royal family as he prepares for his eventual accession to the throne. (Philippe Huguen/Pool Photo via AP, File)