That why I want to get a look at this diary that is supposedly out there. Death date on tombstone reads 8-24-1864. So he wasn't in Mississippi and it would appear he wasn't with Price's Raid. As the story goes he would disappear for days to weeks then show back up on the farm for few days. It sounds like generally accepted partisan behavior but would like to know more about where and when he left on these sojurns. Maybe Bruce Nichols will cover it in Volume III 1864 :>)
Interestingly when speaking with his greatgranddaughter she had no idea which side he fought for or which side came and murdered him. She's a patient of mine and we just happened to be talking genealogy when she brought this affair up. This particular Zimmerman family has its' roots in North Carolina and he had a number of cousins and at least one uncle that fought in the eastern theater for the CSA.