Can anyone tell me anything about the US Veteran Volunteer Infantry? Its history, where it was formed, why there was no state connected to it, etc.

I was looking for a name on the CW Soldiers and Sailors site and it showed that he was a member of the 6th Regiment US Veteran Volunteers Infantry. It had a list of the men who belonged to the Regiment, but there was no history connected with it.

Thanks for your help.

Carol