anywhere there was a fire fight ?
Absolutely.

Especially in Iraq, where the US used DU in 30mm and smaller caliber machine gun bullets on a large scale. (an estimated 1,000 tons) It causes birth defects in children of parents who have come in contact with it, also thought to be a cause of Gulf War Syndrome among US and Brit troops. The US and Britian are the only countries that admit to using DU.