[Aurelius]

"What has always fascinated me about the Civil War is that it was one of the very few wars in history in which Jews fought on both sides."

Rumours persist that anti-Semitism was far greater in the North than in the South and that many Union commands would not knowingly admit Jews into their ranks.

[Alouette]

Rumours persist that anti-Semitism was far greater in the North than in the South and that many Union commands would not knowingly admit Jews into their ranks.

It's not a rumour. Grant banned Jews (civilians) from entering areas under his military control. Sherman also issued such orders. But it's practically impossible to find details about this in any standard Civil War history.