Bitter Harvest, by Michael R. Hicks
Bitter Harvest begins a year after the end of Season of the Harvest, with little in the way of introductory material for a reader who didn't read the prequel, and follows the same heroes as they find that they weren't quite successful enough in the previous book. This time round there's more action - a lot more shooting and blowing things up, at the sort of level that you might expect in a Hollywood vehicle for washed-up actors who need to come out of retirement to pay an unexpected tax bill. Something like The Expendables.
And like The Expendables, it requires very little mental effort to consume, probably required little to write, and after a while starts to feel as if you've read this page before. There's just too much shooting and blowing stuff up. Unlike The Expendables, however, I doubt it'll be much of a crowd-pleaser. That dreadful film did pretty well at the box office, but yer typical cinema-goer has lower standards than yer typical reader.
Even at £2.49 on the Kindle I can't in good conscience recommend that you read this, although I hesitate to tell you not to read it unless you've also not read the prequel. There's a third installment on its way called "Reaping the Harvest", according to the author's website but I'm not sure I'll bother. This installment in the trilogy left some unfinished plot lines, of course, but I wasn't left panting for more.