The war games are a subject that I’ve wanted to read more about, but not enough to do heavy research. I’ve found a short chapter on the Louisiana games in one book, but that’s been about it, except some short items about the Tennessee games.
There ought to be a fair amount of original army material available for research. The question is, of course, how much of it can be easily accessed.
I just recently (and I mean today) was given a copy of “The Regulars: The American Army” by Edward M. Coffman. It covers the Army from 1898 to 1941. From the looks of it the second half covers the interwar year. Might be worth picking up if you want to read more on the subject.