TIL: Over 35,000 Americans fought for Canada in WWI. There is a monument in Arlington Cemetery dedicated to their fallen.
TIL Rags, who became a World War I dog hero, was originally just a stray pup picked up by a couple of American soldiers in July of 1918. He carried messages from one US infantry division to the next tucked under his collar. He was buried with military honours when he died in 1936.
TIL unlike WWII, Korean War, and Vietnam War, there is no national monument in Washington D.C. dedicating to U.S. service members who fought in World War I.
TIL of a remarkable pigeon, named Cher Ami. That little bird became one of the greatest heroes of World War I
TIL that in WW1 The Salvation Army sent 'donut lassies' to soldiers on the front lines of France to make them donuts. They could fry up to 7 donuts at a time in a battle worn helmet. This is why we celebrate national donut day in June and another Nov 5th since it's close to Remembrance/Veterans Day.