Overall OK .... 4

Indeed? after the war is believed to have peace in his garden, but it is precisely at this point that the carrots are most likely to be cooked precisely and as luck!
In all honesty, I liked the first two volumes of this series (more the latter), but from this volume is a discrete recession looming even if the cycle of a few lights still shining.
There indeed embers smoldering but will they reignite the fire in the galaxy? ...

The life of the small family on huckleberry is still fairly cutesy (and frankly it's over nunuche I think) ...
And context grandiloquent sauce: Supreme threat and guilty human federation, birth still a fairly small mouse (pretty but small).

The last colony (of the novel) is still a beautiful ballad.
The politico-military issues are pretty well thought but the author does not really operates in depth all his good ideas.
But the context is sufficiently exploited so that we feel in anyway ..

The scene of the duel that settles it is frankly a tightrope. It is well written enough for satisfaction, but we are at the limit of blah ...
And if we reflected about it, this does not look far on the conceptual level.

Although Scalzi has undeniable qualities, I think it is one of those authors that make the opportunistic kind down and sawing the branch on which they sit.