Not a very well developed thesis on Artillery. If the author is reading, please get a copy of Dunnigan's How to Make War which describes in detail how to calculate the various effectiveness of different artillery strategies. I've got a dog eared copy of the 2nd edition I was using while writing my 'ultimate replacement for Bright's empire' game (unfinished :-) But overall, in the context of war gaming it is an excellent reference.

[1] http://www.amazon.com/How-Make-Fourth-Edition-Comprehensive/...

This one: http://www.amazon.com/How-Make-Fourth-Edition-Comprehensive/...

Called "How to Make War" and it describes the mechanics, the theory, and the variables that impact the prosecution of warfare. The Wargames book was, in my opinion of course, a derivative which attempted to re-contextualize the information from HtMW into something more directly 'wargame like' but, again in my opinion, it left out too much to be useful even for that.