I just spotted what seeed like very interesting free kindle book downloads:
Day of War (Lion of War Series)
Remember that you do not need a Kindle e-reader to be able to read this book. You can read it on your PC, iPhone, iPad, Blackberry and Android. Just download for free the appropriate application to be able to do that. Amazon changes prices without notice, so make sure to check that the kindle price it is still $0.00 before you start downloading this book.