Today marks the 65th Anniversary of the invasion at Normandy Beaches in France by American, Canadian, and British troops, supported by Polish, Norwegian, and some Free France soldiers. Not many veterans of that battle, or other World War II battles, remain. Unlike World War I, this war has been remembered and commemorated hundreds of times.
So if you know a Vet, say thanks. Even if they weren't on the shores of Normandy-Utah, Omaha, Gold, Juno, or Sword-thank them anyway.
And if you ever get a chance to visit The National World War II Museum in New Orleans, I highly recommend it. It's a wonderful experience with enough stuff to amaze even the more knowledgeable historian.