Support your local or regional Honor Flights - taking the WWII vets to see their memorial in D.C. at no cost to them.
I saw one of my grandfather’s friends the other day and he told me about his life as an infantryman in Europe during the War. In January, 1945 his platoon was on patrol near the Ardennes when they ran into a German armor column and were captured. He ended up spending the next three months in German hands before being liberated by a Canadian force. It was quite a harrowing story.