A non-military book series I would recommend is called "A Song of Ice and Fire" by George RR Martin. It's a Fantasy series, but will eat up time like no other. Book 1 is called "A Game of Thrones" and each book is between 700 to 1000 pages long (paperback).
http://www.amazon.com/gp/product/055...lance&n=283155
Regards,
Aric