A lot of Devil’s Due focuses on the same things as the rest of the Destroyermen series. The ongoing war (split fully between multiple fronts), a complex plot and cast of characters, and Anderson’s meticulous attention to detail, particularly where military technology is concerned. And that last bit ties into the character development we see this time around. The war is far from over, but it is starting to wrap up. There’s still plenty of fighting left to be done but the end is in sight. It’s starting to look like this may actually end. That they might actually win. And the characters start to ponder what that means.
Way back in book 1, the Lemurians were a (mostly) peaceful people. They only took up arms because the Grik forced them to. And they were a divided people with each Home and land city doing their own thing. The war changed all of that. Everyone’s under one banner now and everybody, soldiers and citizens alike, are helping the war effort. Their technology is decades ahead of what it was, but it’s all been focused on war. So, when peace finally comes, what does that mean? Things will never be like they were before. And the realization of that is starting to sink in.
The characters are fully aware that they did what they had to do. But all the deaths of the war, the orphans those deaths created, and the sheer psychological effects are unprecedented to these people. And while all this is going through everyone’s minds, the war continues as the final battle against Kurokawa draws near. I obviously won’t spoil how that plays out, but man, it was good.