You are right that I expect a lot more generals to start coming forward. I went on a hunting trip with a two star who told me that Rummy is absolutely hated by the generals.
I don't think that hate is entirely justified, but I do believe the hate is going to start coming out in droves.
Check this out:
http://www.freerepublic.com/focus/f-news/1614702/posts
Can Rumsfeld withstand backtalk of former commanders? - Rumsfeld flunking, ex-generals charge