July 1922: Prince Philip of Greece as a toddler. 
July 1935: Prince Philip of Greece in Scotland dressed for the Gordonstoun School's production of "MacBeth." 
1935: Prince Philip, Duke of Edinburgh, as a young man. 
July 1947: Princess Elizabeth and her fiance, Philip Mountbatten, at Buckingham Palace, after their engagement announcement. 
July 31, 1947: Prince Philip, Duke of Edinburgh, bowling at the nets during cricket practice. 
November 20, 1947: Prince Philip and Princess Elizabeth at Buckingham Palace after their wedding. 
July 20, 1949: Prince Philip bowling during a village cricket match in Mersham, Kent, against the neighboring village of Ladington. 
August 1951: Princess Elizabeth, Prince Philip and their children Prince Charles and Princess Anne. 
October 17, 1951: The Duke of Edinburgh dances with his wife, Princess Elizabeth, at a square dance in their honor in Ottawa, by Governor General Viscount Alexander. 
February 6, 1952: Queen Elizabeth II and Prince Philip on board the destroyer Crusader, bound for Victoria and the first leg of their Commonwealth tour. On the same day, King George VI passed away in England and the royal tour was cut short. 
June 2, 1953: Prince Philip, Queen Elizabeth II and their children, Prince Charles and Princess Anne, wave from the balcony of Buckingham Palace after her Coronation Ceremony. 
1961: Queen Elizabeth II and Prince Philip tour the streets of Rome. 
August 1962: Prince Philip at the helm of his yawl, "Bloodhound," during Cowes Regatta. 
March 24, 1964: Prince Philip laughs as the Beatles fight over the single award that he presented to them at the Carl-Alan Awards ceremony. 
June 13, 1964: Queen Elizabeth II, Prince Philip, Prince Andrew and Prince Edward wave to the crowds from the balcony at Buckingham Palace during the Trooping of the Colour. 
June 12, 1965: Queen Elizabeth II and Prince Philip return to Buckingham Palace after the Trooping The Colour ceremony. 
April 7, 1966: Queen Elizabeth II and Prince Philip leave Westminster Abbey after the annual Maundy ceremony. 
August 6, 1967: Prince Philip competes in a bicycle polo match at Windsor. 
November 26, 2001: Queen Elizabeth II and the Duke of Edinburgh pose for a photo at Buckingham Palace to commemorate her Golden Jubilee in 2002. 
May 13, 2005: The Duke of Edinburgh rides his mini motorbike at the Royal Windsor Horse Show at Home Park, Windsor Castle. 
June 14, 2007: The Duke of Edinburgh stands behind Queen Elizabeth II after a remembrance service commemorating the 25-year anniversary of the Falklands conflict in Panbourne, Berkshire. 
March 3, 2010: The Duke of Edinburgh inspects the Guard of Honourat the Horse Guards Parade. 
July 3, 2010: Queen Elizabeth II talks to Prince Philip, Duke of Edinburgh, during the Canadian concert for Human Rights in Winnipeg, Canada. 
June 11, 2011: Queen Elizabeth II and Prince Philip attend the annual Trooping the Colour ceremony in a horse and carriage. 
May 1, 2012: Prince Philip visits Sherborne Abbey as part of the Diamond Jubilee tour of the country. 
- Prince Philip spent five nights in a hospital with a bladder infection
- The 91-year-old has been hospitalized three times in the past eight months
- Queen Elizabeth II's husband is the longest-serving royal consort
London (CNN) -- Queen Elizabeth II's hubsand Prince Philip was released from a hospital in Scotland on Monday after being treated for a bladder infection.
Philip, the Duke of Edinburgh, was admitted to Aberdeen Royal Infirmary in Scotland on Wednesday.
The 91-year-old, who first suffered the problem in June, fell ill again as he was staying at the royal residence in Balmoral, Scotland, where the queen traditionally spends part of the summer.
Buckingham Palace said Wednesday he had been taken to the hospital as a precautionary measure and was likely to be kept in for several days.
Prince Philip hospitalized 
Inside an enduring royal romance It is the third time Philip has been hospitalized in the past eight months.
Before the bladder infection, which he initially contracted during events marking the queen's diamond jubilee, he spent four nights in a hospital over the Christmas holiday last year for treatment of a blocked coronary artery.
However, he appeared in good health last week as he fulfilled several engagements on the Isle of Wight, off the south coast of England.
Philip's next scheduled public appearance is alongside the queen as she opens the London 2012 Paralympic Games on August 29.
He appeared by her side at the opening ceremony for the Olympic Games at the end of July and accompanied her on a visit to the Olympic Park as the events got under way.
It has been a particularly busy year for the queen and Duke of Edinburgh because of the many events held to celebrate her diamond jubilee.
Addressing Parliament in March, the queen paid tribute to her husband as "a constant strength and guide" throughout her long reign.
The longest-serving consort in British history, Philip married then-Princess Elizabeth in November 1947 at Westminster Abbey.
Born the prince of Greece and Denmark on the Greek island of Corfu in 1921, Philip left Greece with his family when he was 18 months old after King Constantine was forced to abdicate the throne following a revolution. The family moved to Paris and then to England in 1928. Philip also went to school in Germany.
Philip renounced his Greek title when he became a naturalized British subject in 1947.
CNN Royal Correspondent Max Foster contributed to this report.
