Memorial Day is a federal holiday in the United States for remembering the people who died while serving in the country's armed forces.[1] The holiday, which is observed every year on the last Monday of May,[2] originated as Decoration Day after the American Civil War in 1868, when the Grand Army of the Republic, an organization of Union veterans founded in Decatur, Illinois, established it as a time for the nation to decorate the graves of the war dead with flowers.[3] By the 20th century, competing Union and Confederate holiday traditions, celebrated on different days, had merged, and Mem