Any SW fic that focuses on a galaxy war, ie Clone Wars. The best i could find is:

https://www.fanfiction.net/s/10783499/1/Rogue-Knight

It's a Clone Wars era SI fic, that brings a Old Republic Sith into the war around the start of the Clone Wars TV series.

If anyone has been able to find any other good ones please post, i'm drowning here

:yandere

 

Ay mate.

In answer to your question, I haven't seen one focused on wars, either. Most of the better fics in SW right now tend to be more character pieces rather than focused around the war itself, but someone else might've had more luck.

Otherwise, you posted in the wrong forum, I'm afraid. Ask a mod or something to move this over to the "Story Search" subforum instead - it's there for a reason!