Prince Philip, the longest-serving consort of a reigning British monarch, died on Friday, Buckingham Palace announced. He was 99.
The duke of Edinburgh died after spending weeks in London hospitals and undergoing an unspecified heart procedure March 4 for a pre-existing condition. He first entered King Edward VII's Hospital on Feb. 16.
"It is with deep sorrow that Her Majesty the Queen announces the death of her beloved husband, His Royal Highness the Prince Philip, Duke of Edinburgh," Buckingham Palace said in a statement.
"His Royal Highness passed away peacefully this morning at Windsor Castle. The royal family join with people around the world in mourning his loss."
He was born Prince Philip of Greece and Denmark on June 10, 1921, in Greece, to Prince Andrew of Greece and Denmark and Princess Alice of Battenberg. At birth, he was in line for the thrones of both countries.
As a baby, Philip and his family were evacuated to France after his uncle, Greek King Constantine I, was forced to abdicate as a result of losing the Greco-Turkish War. He was educated in various schools in France, England, Germany and Scotland, and ultimately entered the Royal Naval College in Dartmouth.
Philip served with the British forces during World War II in various stints aboard the HMS Ramillies, HMS Kent, HMS Shropshire, HMS Valiant, HMS Wallace and HMS Whelp. He obtained the rank of commander before leaving the military in 1952.