I Can't Help but to think FFXI Opening CGI is highly simular to..

[Starlord]

IIRC it was a district in the sandoria nation, all three nations were there to defend it though.. I think that was the climax of the war, minus the fenrir story.

Yeah your right, and in FFXIV A Realm Reborn they are doing the exact same thing: Forming a Eorzan Alliance to defend against this threat.. which is simular to FFXI Vana'dain Alliance ( thats what Im calling it anyways :P) to defend against this threat.

20 years later.. FFXI

Assuming FFXIV will have a "X Year later". Since there homes got attacked.. so they need time to rebuild.

Edit: Yes it is on a Battlefield, however, Ul'dah is getting Blow into Smithereens by Dalamud :P.. its all the same " Destruction!" :P