Agreed that the War of Northern Aggression (a.k.a. The Civil War) -- executed to prevent secession of the breadbasket southern states -- was a 'big insurgency'. What about the Revolutionary War -- the one fought to establish our constitutional republic? I'd suggest that it was the 'biggest'. And the very real war that is raging today is the second biggest. That said, though, the fight only ends pauses with the death/surrender of one side or another. There is no end to the struggle to survive. Be well. Live. Breathe. Love. Fight.