Soldiers join the military to serve their country, but when bullets are flying, it's hard to fight for an abstract notion like patriotism. They're fighting for the people standing next to them, and it doesn't matter who's a Republican or a Democrat, or who's black or white or Christian or Muslim or gay or straight. If Congress and all Americans could manage to ignore those differences, we would have a perfect country, but somehow we cannot rise to that level of nobility.