I think he may know what he's talking about...

Lieutenant General William E. Odom, U.S. Army (Ret.), is a Senior Fellow with Hudson Institute and a professor at Yale University. He was Director of the National Security Agency from 1985 to 1988. From 1981 to 1985, he served as Assistant Chief of Staff for Intelligence, the Army's senior intelligence officer. From 1977 to 1981, he was Military Assistant to the President's Assistant for National Security Affairs, Zbigniew Brzezinski.

If the Democrats truly want to succeed in forcing President Bush to begin withdrawing from Iraq, the first step is to redefine "supporting the troops" as withdrawing them, citing the mass of accumulating evidence of the psychological as well as the physical damage that the president is forcing them to endure because he did not raise adequate forces. Both Democrats and Republicans in Congress could confirm this evidence and lay the blame for "not supporting the troops" where it really belongs – on the president. And they could rightly claim to the public that they are supporting the troops by cutting off the funds that he uses to keep U.S. forces in Iraq.

No U.S. forces have ever been compelled to stay in sustained combat conditions for as long as the Army units have in Iraq. In World War II, soldiers were considered combat-exhausted after about 180 days in the line. They were withdrawn for rest periods. Moreover, for weeks at a time, large sectors of the front were quiet, giving them time for both physical and psychological rehabilitation. During some periods of the Korean War, units had to fight steadily for fairly long periods but not for a year at a time. In Vietnam, tours were one year in length, and combat was intermittent with significant break periods.

Of course, no U.S. forces have found themselves being used a literal pawns in a colossal power and resource grab that the occupation of Iraq has become.