between the German Army of WWI and WWII, the Iraqi Army of 1991 and 2003, and the U.S. Army's Information Management Organization (the computer system folks)? The answer is:
Neither the German Army nor the Iraqi Army ever successfully defeated the American Army in the utter and complete manner that our own IM people have done.
That's right, sportsfans, ever since the Army began using computers, they've managed to have all forward progress in many units, including mine, grind to almost a complete halt. So far, I've expended more staff hours trying to get my Army computer working than I've devoted to anything else. Sheesh.