Does that include Pea Ridge? Or are you just talking about the small-unit fights, when you say "partisan actions"?
I visited Pea Ridge in 1987, and I'd have to score that one as at least a marginal or even a provisional Union victory. The South had great field position at the end of the first day, and could have closed out the action and forced a retreat, if not for the cowardice of the muleskinners during the night.
It didn't help that the Confederates lost two experienced general officers during the battle. The old Napoleonic habit of generals' reconnoitering by "riding out" may have cost the Confederacy the entire war, considering they lost critical leaders at Pea Ridge, Shiloh, and Chancellorsville.
“It didn’t help that the Confederates lost two experienced general officers during the battle. The old Napoleonic habit of generals’ reconnoitering by “riding out” may have cost the Confederacy the entire war, considering they lost critical leaders at Pea Ridge, Shiloh, and Chancellorsville.”
Excellent point.