Prince Philip's death Friday at the age of 99 marked the end of an era in Britain's royal family.
Philip was a steadfast supporter of his wife of 73 years, Queen Elizabeth, and a consistent presence in public life.
When he officially retired from royal duties in 2017 at age 96, Philip had completed more than 22,000 solo engagements since 1952, given 5,496 speeches in his travels to more than 76 countries, authored 14 books, served as patron to 785 organizations and made 637 solo overseas visits, according to Buckingham Palace.
Philip was also a constant presence in the life of his family. In addition to Queen Elizabeth, the duke is survived by four children, eight grandchildren and 10 great-grandchildren.
Upon his death, Philip's family members and leaders from around the world reflected on his 99 years of life and the legacy he leaves behind.
Buckingham Palace announced Philip's death with a statement that read, in part, "The Royal Family join with people around the world in mourning his loss."
Following tradition, Buckingham Palace also placed an announcement of Prince Philip’s death on the gates of the palace. Flags at the palace will be flown at half-mast from today until the morning of the day after the funeral service for Philip.
U.K. Prime Minister Boris Johnson spoke about Philip's life and legacy in comments delivered Friday outside 10 Downing Street in London.
"Prince Philip earned the affection of generations here in the United Kingdom, across the Commonwealth and around the world," Johnson said. "Like the expert carriage driver that he was, he helped to steer the Royal Family and the monarchy so that it remains an institution indisputably vital to the balance and happiness of our national life."
The British Army also shared news of the death of Philip, whose military career included service in the British Navy during World War II.
Australian Prime Minister Scott Morrison released a statement reflecting on Philip's service to Australia, a Commonwealth nation.
"Prince Philip was no stranger to Australia, having visited our country on more than 20 occasions," Morrison said in the statement. "Through his service to the Commonwealth he presided as patron or president of nearly 50 organizations in Australia. Given his own service, Prince Philip also had a strong connection with the Australian Defense Force."
"For 65 years, The Duke of Edinburgh’s Award scheme has encouraged over 775,000 young Australians to explore their leadership potential. Forty thousand young Australians are currently participating in the program," he said. "Australians send our love and deepest condolences to her Majesty and all the Royal family. The Commonwealth family joins together in sorrow and thanksgiving for the loss and life of Prince Philip. God bless from all here in Australia."
This is a developing story. Please check back for updates.
Royal family members, world leaders react to Prince Philip's death at 99 originally appeared on goodmorningamerica.com