The 33rd ID history is somewhere on Google books. You'll have to set up a Google account, which is free. Sign up for a free gmail email account, that's all it takes. Occasionally people outside of the U.S. have trouble viewing Google books -- it may be due to different countries' versions of copyright law.

The French taught us the G1, G2, G3 and G4 form of staff organization during WW I. Guys may recall that French army intelligence is called the Deuxieme Bureau.