On their joint Instagram account, the Prince and Princess of Wales posted a tribute marking the occasion: “Honouring all those who have served, and continue to serve, in defence of our freedom. “On Remembrance Sunday, we remember those who gave their lives in service, and reflect on the lasting impact of their sacrifice. We remember them today and always. Lest we forget.”Held annually on the second Sunday of November, Remembrance Sunday honours the sacrifices of those who have served in both the military and the emergency services. Poppy wreaths are placed at war memorials throughout the country, accompanied by a two-minute silence at 11am.