What does Petraeus' CENTCOM boss think of him? "Ass-kissing little chickenshit"

Think Progress quotes IPS News, whose story opens:

WASHINGTON, Sep 12 (IPS) - In sharp contrast to the lionisation of Gen. David Petraeus by members of the U.S. Congress during his testimony this week, Petraeus's superior, Admiral William Fallon, chief of the Central Command (CENTCOM), derided Petraeus as a sycophant during their first meeting in Baghdad last March, according to Pentagon sources familiar with reports of the meeting.

Fallon told Petraeus that he considered him to be "an ass-kissing little chickenshit" and added, "I hate people like that", the sources say. That remark reportedly came after Petraeus began the meeting by making remarks that Fallon interpreted as trying to ingratiate himself with a superior.

That extraordinarily contentious start of Fallon's mission to Baghdad led to more meetings marked by acute tension between the two commanders. Fallon went on develop his own alternative to Petraeus's recommendation for continued high levels of U.S. troops in Iraq during the summer.

The enmity between the two commanders became public knowledge when the Washington Post reported Sep. 9 on intense conflict within the administration over Iraq. The story quoted a senior official as saying that referring to "bad relations" between them is "the understatement of the century".

I kept wondering why Petraeus kept referring to his "chain of command" instead of naming specific superior officers when giving his testimony. Maybe that's just proper protocol, but maybe it's because he hates his boss.