I am currently reading and enjoying John Birmingham’s Weapons of Choice, the first part of the Axis of Time Trilogy.
It is not high brow science fiction and anyone who has seen the film the Final Countdown will be having deja vue.
There are a few references to Harry Turtledove’s World War series which aren’t really needed and of course there are a lot of similarities between the two books.
Having said that it is a fun read and I will be looking forward to the next two books.
You can get the book in the UK from Amazon.