1948 - Is appointed as a personal aide-de-camp to his father-in-law King George VI.
1950 - Is promoted to Lieutenant-Commander.
1952 - Is promoted to Commander, but his naval career ends with the death of King George VI and his wife's ascension to the throne on February 6th.
1953 - Is appointed Admiral of the Fleet, Field Marshal of the Army and Marshal of the Royal Air Force. And is designated regent presumptive by an Act of Parliament. In the event of the Queen's death or incapacitation, Prince Philip would rule as regent for Prince Charles.
1956 - Starts the Duke of Edinburgh's Award, which rewards children for personal development and community involvement.
1957 - By Queen's decree, is "granted style and titular dignity of a Prince of the United Kingdom". He is invested as a Grand Master and First or Principal Knight of the Order of the British Empire. This decree restores his birth title of Prince.
1961-1981 - First president of the World Wildlife Fund - UK
1964-1986 - President of International Equestrian Federation
June 1968 - Is awarded the Order of the Merit by the Queen, an honor bestowed to those of, "great achievement in the fields of the arts, learning, literature and science," and is restricted to 24 members.
1981-1996 - Serves as president of World Wildlife Fund International.
1996-present - President Emeritus of the World Wildlife Fund.
April 9, 2005 - Prince Philip and Queen Elizabeth II are the only senior members of the Royal Family who do not attend Prince Charles and Camilla Parker-Bowles's civil wedding ceremony. They do attend the dedication service.
November 10, 2005 - His 58th wedding anniversary makes him the longest-serving British consort, out-living the wife of King George III, Queen Charlotte.
October 23, 2006 - Inspects British forces in southern Iraq.
May 3-8, 2007 - Prince Philip and the Queen visit the United States for the 400th anniversary of America's first British settlement in Jamestown in 1607. They attend the Kentucky Derby on May 5 and a State Dinner at the White house on May 7.
April 1, 2009 - Along with Queen Elizabeth II, meets President Barack Obama and First Lady Michelle Obama at Buckingham Palace.
June 10, 2011 - The Duke's 90th birthday makes him the oldest-serving royal consort.
December 23-27, 2011 - Undergoes treatment for a blocked coronary artery at Papworth Hospital.
June 4-9, 2012 - Prince Philip is hospitalized for a bladder infection at King Edward VII Hospital in London. He misses part of the Jubilee celebrations commemorating the Queen's 60th anniversary on the throne.
August 15-20, 2012 - Is treated at Aberdeen Royal Infirmary for a bladder infection.