So, I decided to jump back into Skyrim after taking a few months off, (got busy, other games came out, felt my desire for the game was fulfilled, etc.), and so I'm going back through the campaign I was running with initially, and I have some questions in regards to the Civil War storyline portion.
1. Is the Civil War questline part of the main quest that I'll eventually see?
2. If not, then must I join either the Legion or the Stormcloaks to see the Civil War portion of the story?
It looks like I'm nearing the end, because:
If it is true that I am only a few quests away from the end, then I might as well finish up this playthrough and start a second, (if I'm close to the end of a game, I prefer to go ahead and finish it up and just start a new playthrough).