Sorry to respond so late, I have just recently seen your post.
FYI, there is a flag held by the Bedford County Historical Society in Bedford, PA that may be the flag of Avery's 4th GA Cavalry. They are unsure of its provenance except that it was donated by a soldier who had been in Sherman's March to the sea.
- This flag was donated by the descendants of a member of the 2nd Kentucky Cavalry who served during the fighting in Tennessee and around Atlanta and who later served in the 10th Ohio Cavalry during Sherman’s “March to the Sea.” It has been described by a Confederate flag specialist as an Augusta (GA) Depot issue.
- Sherman’s chief of cavalry, BGEN Judson Kilpatrick, reported the capture of a flag belonging to the 4th Georgia Cavalry near Waynesborough in Burke County 28 November 1864. This is probably that flag because the 10th Ohio Cavalry and both 4th Georgia Cavalry regiments, Avery’s and Clinch’s (which were both assigned to COL C.C. Crews’ brigade), were all around Waynesborough during the period 27-28 November, and participated in the heavy skirmishing at Buckhead Creek and Reynolds' Plantation near Waynesborough on 28 November.
- As to which 4th GA Cavalry it belonged to, there is essentially no way to differentiate between them at present.
- - No report of a flag lost by either regiment has been found.
- - The Confederate Army of Tennessee, with which Avery’s regiment had long served,
employed the rectangular flags issued by the Augusta Depot.
- - Clinch’s regiment had long been in the Department of SC, FL & GA, having only joined the AoT in August, and would more likely to have had a square flag issued by the Charleston Depot than one typical of the AoT. However, it could have been issued a new flag from the Augusta Depot upon reporting to the AoT.