1971 saw the 50th anniversary of the British Legion.
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| Great Britain - 25 August 1971 |
Appropriately the stamp shows a nurse and military personnel and, of course, the poppy now worn in remembrance every year.
"In Flanders Field" - the war poem written by John McCrae - is commemorated on the Canadian stamp issued on 3rd May 2015, the 100th anniversary of it being written by that Canadian Lieutenant Colonel physician.
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| Canada |
In 2014 in a series commemorating the First World War Great Britain issued a stamp also showing a poppy.
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| Great Britain - 28 July 2014 |
For other remembrance/military stamps just follow the links in the comments to - Sunday Stamps