Yeah this could be it. Here is the event for Orphan bde. It mentions Davidson county where Nashville is located, however, it looks like it also checks things in KY, TN and, MS. Can anyone confirm this event is tied CSA ownership of Nashville?
SelectFaction = $CSA
StartEvent = evt_nam_CSA_OrphanBde|1|1|NULL|NULL|NULL|NULL
Conditions
MinDate = 1862/02/01
MaxDate = 1862/03/15
EvalUnqUnit = Orphan Bde;NOT
Actions
DescEvent = evt_desc_CSA_OrphanBde
SelectRegion = $Davidson, TN
SelectFaction = $CSA
SelMostNumGroup = Area $KY;CPCount;CondSkip
GenMsg
SelectRegInArea = $TN;Squared;OwnedVPCities;CondSkip
GenMsg
SelectRegInArea = $MS;Squared;OwnedCities;CondSkip
GenMsg
PickFromRegList = NotEnemy;NotAdj
GenMsg
SelectFaction = $CSA
CreateGroup
Posture = $Defensive
SetKind = $Land
Entranch = 0
InCS = 0
FixType = 0
SetName = Orphan Bde
Apply
CreateUnit
SetType = $uni_CSA_BdeN1
FlavorName = Col. B. Goose
SUFlavorName = 2nd Kentucky|3rd Kentucky|4th Kentucky|5th & 9th Kentucky|6th KY Graves Bty|1st KY ‘Burns' Bty|Morgan's Cav.
SetLevel = 1
SetName = Orphan Bde
Apply
EndEvent
"Tell General Lee that if he wants a bridge of dead Yankees I can furnish him with one."
-General William Barksdale at Fredericksburg