Like the previous reviewer, I downloaded the preview from Baen books. I would suggest, in order to fully enjoy War God's Own, you really should read Oath of Swords (the first book) before reading War God's Own. While you might enjoy the latter, there are so many references, just in the preview, to characters and events in the first book, that I imagine it might be hard to follow what's going on. For instance, the young knight's fury over the Ballad of Bahzell Bloody-Hand, a song that Brandark began composing in the first book, is based on Bahzell's adventures in Oath of Swords (I have hopes that Mr. Weber will let us see some of these lyrics someday). And the War God had to argue long and hard in the first book to recruit Bahzell, which is also, I gather, mentioned in the song, which the young knight thinks is making fun of his order and his god. And War God's Own picks up right where Oath of Swords ends. The tone of the previous book and the preview of this one are far lighter than Honor. (Weber does not appear to be near as hard on his characters in this series as he is on those in the Honor series.) There is humor, swashbuckling adventure, a charming reluctant hero and smart-mouthed sidekick, an entertaining supporting cast of characters, villainous bad guys, and some poor sods just trying to do the best they can in a bad situation. The good guys get rewarded and the bad guys get their come-uppance. What more could you ask of a book?
I like all of Weber's books, but I think I would have a real problem if both Honor Harrington and Bahzell Bahnakson came out at the same time and I had only enough money for one. I have a feeling Bahzell would win. In fact, I liked the preview so much I ordered it from Baen in the hopes that I might get it earlier than if I wait for the book to arrive at my local bookstore. (When it comes to books, I'm not very good at delayed gratification.)