Not to bag on the IA books as they are good, but there are some really awesome paint & modelling books for scale military that go way beyond their techniques.
I really like the Verlinden series of books as the attention to scale military models is completely mindblowing. Lots of techniques for scratch building and just really cool insight on how to do ultra realistic paint details.
I have this one and it's great, the other advatage is they are much cheaper than the IA books
http://www.amazon.com/Verlinden-Way-Vol ... 456&sr=1-6