Doug, I don’t know a helluva lot about Russian Combat Service Support. Assuming they do business much like the Soviets did, the bulk of their trains will be ammunition (Cl V). When they have plundered all the gas stations in Georgia they will need Petroleum, Oil & Lubricants (Cl III). They will subsist upon the bounty of Georgian larders to the maximum extent possible, thus reducing their need for rations (Cl I), and they will despoil the Georgians of every drop of Cl VI they can find, and they have sharp noses for finding such prizes.

Their logistical tail will be much smaller than a Western army’s, so even interdicting the Roki Tunnel and the passes through the Caucasus won’t have an immediate constraining effect on their operations. Eventually they will base their logistics from a Black Sea Port of Debarkation and run their Main Supply Route to Gori. The heavy heel of the Russian boot will just dig deeper into the Georgian neck to make up any shortages.