updated 11/10/2013 AT 11:00 AM ET
•originally published 11/10/2013 AT 11:35 AM ET
William, 31, who served as a RAF search and rescue helicopter pilot until September, was watched by wife Kate as he laid a wreath of poppies at a memorial in central London. He followed his brother, army captain Harry, 29, who donned his ceremonial Household Cavalry great coat with wide red collar, in paying tribute on behalf of his father, Prince Charles (who is in India with wife Camilla, Duchess of Cornwall).
As in previous years, Kate, 31, watched from a balcony above Whitehall, central London, alongside William s aunt Sophie, Countess of Wessex, and Tim Laurence, the husband of Princess Anne. Kate donned a brooch in the shape of a poppy – the traditional symbol worn to honor those who have perished in wars.
Sunday’s ceremony (a continuation from Poppy Day in London on Thursday) remembered those who died in the two world wars and conflicts since.