On the 11th hour of the 11th day of the 11th month in 1918, The Great War, the war to end all wars, ended. Unfortunately, the peace after that war only lasted 2 decades, and many of the lessons from The Great War have been lost. The next year, a 2 minute silence was proposed to remember those killed in the war, and then to remember the people they left behind. Armistice Day and its subsequent remembrance provided the foundation for Veterans Day.
Tip: although flu vaccine may be given through the winter months and still be beneficial, peak benefit occurs if it is given before Veterans Day.