In Australia, the poppy is widely sold and worn on Remembrance Day. It was also adopted by veterans' groups in Canada, Australia and New Zealand. In 1921 she sent her poppy sellers to London, where they were adopted by Field Marshal Douglas Haig, a founder of the Royal British Legion. Guérin was inspired to introduce the artificial poppies commonly used today. At a conference in 1920, the National American Legion adopted it as their official symbol of remembrance. She then campaigned to have the poppy adopted as a national symbol of remembrance. At a November 1918 YWCA Overseas War Secretaries' conference, she appeared with a silk poppy pinned to her coat and distributed 25 more to those attending. In tribute to McCrae's poem, she vowed to always wear a red poppy as a symbol of remembrance for those who served in the war. In 1918, American YWCA worker Moina Michael, inspired by the poem, published a poem of her own called ' We Shall Keep the Faith'. The poem was first published on 8 December 1915 in the London-based magazine Punch. The poem was written by Canadian physician and Lieutenant Colonel John McCrae on after witnessing the death of his friend, a fellow soldier, the day before. Its opening lines refer to the many poppies that were the first flowers to grow in the churned-up earth of soldiers' graves in Flanders, a region of Europe that overlies parts of Belgium and France. The use of the poppy was inspired by the World War I poem ' In Flanders Fields'. It is especially controversial in Northern Ireland and most Irish nationalists and Irish Catholics refuse to wear one, mainly due to actions of the British Army during the Troubles, while Ulster protestants and Unionists would tend to wear them. Some have berated this as 'poppy fascism' and argued that the Appeal is being used to glorify current wars. During this time, it is an unwritten rule that all public figures and people appearing on television wear them. In the weeks leading up to Remembrance Sunday, they are distributed by The Royal British Legion in return for donations to their 'Poppy Appeal', which supports all current and former British military personnel. The remembrance poppy is especially prominent in the UK. Poppy wreaths are also often laid at war memorials. There, small artificial poppies are often worn on clothing on Remembrance Day/ Armistice Day (11 November) and in the weeks before it. Today, they are mainly used in the UK and Canada to commemorate their servicemen and -women who have been killed in all conflicts since 1914. They were then adopted by military veterans' groups in some Commonwealth states: the United Kingdom, Canada, Australia and New Zealand. Inspired by the World War I poem ' In Flanders Fields', they were first used by the American Legion to commemorate American soldiers who died in that war (1914–1918). The remembrance poppy (a Papaver rhoeas) has been used since 1920 to commemorate soldiers who have died in war. Artificial 'remembrance poppies' at a war memorial in Ypres, Belgium

Remembrance poppy cross