There is so much gold in here. The human race would do well to explore how it's possible to turn hatred into love. It clearly happened here, and I've witnessed it on a smaller scale as a 16 year old in Vienna. As an immigrant, it was easy to find yourself in the wrong place at a wrong time. That finally happened one night, and the only thing that saved me was seeing a sign on one of the guys' jackets that belonged to…
War is almost never about hate or love. War is a tool of diplomacy. Both of these men were simply professionals doing their jobs. The one attacking, the one defending. It's unlikely they ever hated each other or even really thought a great deal beyond how to accomplish their respective missions at the time.
More often than not war is a means of pursuing business interests.