In 2012, Queen Elizabeth II will celebrate a historic milestone: 60 years as Britain's Queen and the constitutional monarch of the globespanning British Commonwealth. Join TIME as we explore the turbulent life and times of Elizabeth and the royal House of Windsor. Here is a chronicle of war and sacrifice...of a throne abdicated for love...of the late, beloved People's Princess, Diana...and of the next generation of British monarchs, king-in-waiting Prince Charles and wife Camilla...and Prince William and his wife, the former Kate Middleton, whose 2011 marriage began a fresh new chapter in the annals of the House of Windsor.