More than 43 million Americans have served or are currently serving their country — and more than 1.3 million gave the ultimate sacrifice. According to the U.S. Census Bureau, there are approximately 15.8 million U.S. veterans living today — about 6.1 percent of the adult population. Roughly half are age 65 or older and nearly 2 million are under 35. Our older veterans served in World War II, Ko…