What makes our current war different from others is that our enemy controls nearly every aspect the society we live in. They decide whether we have an income. They can destroy our reputations. The end of the world has started (i.e., we are in a state of active war, it is a violent one even if most people don't know it yet, and it will likely escalate to totality although it may take 100 more years) but everyone still has to go to work. That's the problem. If you're facing a foreign invasion, either you kill them or they kill you and either way it ceases to be your problem. If you're at war with an enemy that has the power (by law) to withhold resources and coerce you to work for them, it's completely different, and in general it is more trying on courage, because there are now three possibilities instead of two: (1) you win, (2) you die, or (3) they keep you alive in a degraded state in which, even if you think you're working in opposition, you actually serve a strategic purpose from their perspective (i.e., they can make an example out of you). The indignities and tactical failures associated with the third possibility are what makes humanity's final war, the war against capitalism, so different and so much harder to prosecute.