The reason that war is such a fascinating subject for writers is because it's a revealer. Put a bunch of people in an adrenaline-fuelled life-or-death situation and their fundamental behaviours are exposed the scrim is taken away and the motivations behind each personality come out to play.
I don't believe that if I came out as bisexual the world will change. But it's really important for people to be truthful about who they are and fight for equality. We need to help the world usher itself into the next phase.