Today marks 101 years since the end of World War One.
Armistice Day, also known as Remembrance Day, marks the day World War One ended, on the 11th Hour, on the 11th Day, of the 11th Month in 1918.
A two-minute silence is held at 11am to remember those who died in the wars, and members of the public stop what they are doing and pay their respect to the fallen soldiers.
The anniversary is also used to remember people who have died in all other wars, including World War Two, the Falklands War, The Gulf War, and the conflicts in Afghanistan and Iraq.
Poppies were the flowers that grew on the battlefields after World War One ended, which is why they are used to symbolise the day.
Remembrance Sunday, takes place on the second Sunday of November every year to to commemorate the contribution of British and Commonwealth military and civilian servicemen and women in the two World Wars and later conflicts.
This Remembrance Sunday marked 100 years since the first two-minute silence was observed on Armistice Day on 11 November 1919.