I recently finally got around to watching Battlestar Galactica: Blood & Chrome, a prequel to the rebooted Battlestar Galactica series, but one set in between it and the still earlier Caprica.
I appreciated its exploration of the zeal of a young Bill Adama, who was eager to kill as many of the enemy as he could, inspired by the stories of other heroes in the war. As the story progresses, Adama learns that much of what he has heard is false, an official version of things aimed at inspiring that very sort of zeal. But the reality of war is different, and involves suffering, hardship, betrayal, compromise, and loss.
One of the things that I appreciated about the entire rebooted Battlestar Galactica phenomenon was its exploration of our tendency to dehumanize our enemies (much more easily done when they are robots and not in fact human, but as we learn in Blood and Chrome, Cylons can feel pain) and to behave in a war that we think is justified and in which we believe we are right in ways that clearly show that we elevate winning above morality, in a manner that blurs any moral distinction between ourselves and those we fight against.