I was busy Memorial Day with my family, culminating in the traditional hamburger dinner. But all the while I was haunted by the images I have seen in the past few years visiting America’s immaculately maintained military cemeteries — not only Arlington National Cemetery but also its overseas offspring in, inter alia, Tunisia, Manila, and Normandy. All are spare and beautiful, fitting monuments to the men and women who fell so that we may be free. So many crosses, along with some Stars of David — so much pain, so much sacrifice, so much heroism and in so many places. It’s hard to comprehend fully when you are a coddled civilian living in the luxury that these fighting men made possible.