[Dan Cooper]

Do you remember the mobility kill of an M1A1 early on in the Iraq war? Did anyone ever figure that out?

Here is the only article I could find:

'Something' Felled An Abrams Tank In Iraq - But What?

[Chainmail]

I do. It turned out to be an RPG-7V. It has a tandem warhead - the precursor cut a hole through the outer layer and the main warhead got through to the engine.