The high altitude bombing was totally ineffective against the mobile targets in Kosovo. The only bombing that was effective was the bombing against the Serb civilian targets. Note that our bombing in Iraq was the opposite - we went out of our way to avoid damage to civilians, and we certainly didn't want to damage the civilian infrastructure in Iraq.
Unfortunately, the Clintonistas and the military higher-ups didn't give a damn about the Serb civilians or Serbian infrastructure, and they did a lot of damage. (The idiots claiming Bush is a war criminal should consider the real damage done by Clinton.) The Clinton administration didn't want to consider that Kosovo, a long-time province of Serbia had a majority of ethic Albanians ONLY because the ethnic Albanians had a) done ethnic cleansing of Serbians during WWII (and the Serbs were reliable allies of the Allies, while the Albanians whole-heartedly supported the Nazis - including genocide of enemies) and also b) Serbia and Kosovo had a better economy, so Albanians came into Kosovo (sort of the way that Mexicans come into California/Arizona/Texas. Imagine what would happen if the UN supported a "plebiscite" where Southern California could vote to separate from the US and become part of Mexico. At least So.California was at one time part of Mexico ... while Kosovo's relationship to Serbia would be more like Boston and Plymouth Rock is to the U.S.)
When the Serbs were bombed into submission and agreed to withdraw - they were able to DRIVE most all their armour - tanks, etc., out of Kosovo - all intact. The military was surprised at the amount of weaponry that survived .... but the Serbs were good at "spoofing".
We were on the wrong side. The evidence of ethnic cleansing is 1/100th as reliable as the evidence of WMDs in Iraq.
Mike