The Pentagon, under pressure from certain media publications, has finally released a suppressed report detailing the damage dealt to the Serbs in the Kosovo air war.

During the war NATO claimed:
Up to 450 artillery and mortar pieces destroyed ("more than 50%")
120 tanks and 220 APCs destroyed ("1/3 of the armored vehicles")
744 "confirmed" strikes

Revised Total:
20 artillery pieces destroyed
14 tanks and 18 APCs destroyed (~3% of armored vehicles, as can be discerned with simple algebra)
58 strikes

It is too bad that I was not able to find any accurate statistics concerning "collateral damage" (to use the sterile military euphemism.)