I have a video from the Iraqi mujahidin where they show captured Shia militiamen with Iranian equipment and you can see visibly the Iranian emblem and the words 'made in Iran', etc etc. We have so many proofs in the Arabic internet, but hardly anyone translates anything, regrettably...

As for Israeli snipers, I didn't read about that really, but for sure there are Jews in Iraq's Kurdistan and even at the ABu Gharib prison, so they are surely all over Iraq. and I remember reading about rabbis also coming with the invaders for many religious and apocalyptic reasons.