First World War centenary
| A remembrance poppy, used as a symbol of remembrance for the war in the United Kingdom and most Commonwealth nations. | |
| Date | 28 July 2014 – 11 November 2018 | 
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| Also known as | World War I centenary | 
The First World War centenary was the four-year period marking the centenary of the First World War, which began in mid-2014 with the centenary of the outbreak of the war, and ended in late 2018 with the centenary of the 1918 armistice.