I'll often check out sample chapters for books Amazon recommends. Usually I see weak writing in the first paragraph, and basic technical problems on the first page: poor use of POV, infodumps, lack of context or stakes or conflict.
But Constitution by Nick Webb surprised me. Not only was the prose tight and the pace good, but there was a masterful degree of character building - often rare in Military SF full stop, let alone for minor characters. And there was a wonderful attention to structure.
The pace is furious. There's conflict and tension on every page - heck, Webb goes out of his way to create it to the point that it flirts with farce, as any opportunity for things to go wrong is fully exploited.
Simply put, the story has an alien invasion headed toward Earth, and the only ship with a chance in shell of stopping it is an outdated piece of junk, captained by a grumpy pensioner and his alcoholic commanding officer - a ship that is currently being stripped down of all offensive ability, ready to be decommissioned and turned into a museum...
As a piece of Military SF it truly stands out from what I've already read in that subgenre.
However, it does have it's flaws. There are parts of the story that touch so close to Battlestar Galactica and Star Trek to be almost derivative - I mean, a Chief Engineer named Scott? Additionally, Webb really misses out on opportunities for scientific realism - after reading Jack Campell's Lost Fleet series this year I'm desperate to see other SF writers in general acknowledge the problems of time delay and distance in space.
All that aside, I found Constitution to be an engaging and hugely entertaining novel. The challenge now is to see whether Webb can maintain the same break-neck standard of pace and tension through the rest of this series.