I am soliciting help in trying to identify which units would have been firing .69 caliber weapons at Nashville. I have recently found a half dozen or so dropped and/or wormed 3 ringers in a yard on the Confederate Right, and I am trying to determine who would have been carrying these. I have read that the USCT may have been carrying these, but I do not have any substantiated proof of that. I have also heard that some Confederate batteries included .69s in their canister and case shot, and I have found both canister and case at this location as well. Does anyone have any info that could help? Thanks!