re: What would the alliances look like in an all-SEC war?

UGA would likely remain neutral at first. A war will likely start between either Bama/Auburn or Bama/LSU. Either way, an Auburn-LSU alliance would happen soon after due to their mutual hatred of Bama. Miss St sees the chance to sock it to Auburn and sides with Bama. UT also joins out of spite for Bama and forms the Triple Entente with Auburn and LSU. Florida sees a chance to crush Tennessee and LSU in one move, and Muschamp is once again Saban's toadie.

Ole Miss wakes up to find the Grinders embroiled in a war and, naturally, join the opposing side. A&M, being A&M, nukes the Longhorns and is itself wiped out by the nuclear fallout. UGA initially opts to remain neutral, citing the costs of waging a war, but upon Florida joining Bama's coalition, puts their problems with Tennessee and Auburn aside. Seeing UGA and Tennessee allied with one another and fearing their new position found position in the East in jeopardy if Tennessee returns to power, SCar joins Bama's side. Arkansas joins Bama as well but no one really notices. Missouri attempts to join Bama's alliance first, then Auburn's, but is turned down by both. Vandy is too busy studying to notice that shite is going down. Kentucky ponders entering the war but decides to stick with what their good at...basketball.


TL;DR version:
Bama, Miss St, Florida, SCAR, and Arky vs Auburn, LSU, UT, UGA, and Ole Miss

A&M acts irrationally and kills themselves, no one wants Mizzou, Vandy and UK sit out.