But still, if the measure of strategic victory was ultimate confederate control of Missouri, the victory at Wilson's Creek did not offer any long lasting benefit in that regard.
it certainly didn't provide any lasting benefit for Union Control....The MSG advanced afterwards not retreated, fought and won another substantial victory and was increasing its numbers, to spin it as a Union victory is not realistic, it neither defeated the MSG nor gained control of Missouri, that was done months later by Fremont.
For years it seems theres this loose analogy to Antietam, but it ignores instead of blunting and seeing the ANV retreat....WC just emboldened the MSG to the offensive to win other victories, it was a setback not accomplishing anything other then providing some much needed arms to the MSG, and allowed more much needed arms afterwards with the capture of Mulligan.
There was in effect 3 campaigns, Lyons pursuit of a portion of the MSG to WC, which ends in defeat, then Prices campaign north with culminates in victory at Lexington and consolidation of most of the MSG. which is defeated in a largely bloodless campaign by Fremont who had gathered the forces to secure the state from the top down and force by maneuver Price to have to retreat out of the state.
The one that won the state for the Union was Fremonts, and in spite of Lyons failed campaign, not because of it
That Fremont had fell in disfavor and was being replaced even as he secured the state, doesn't change he was the one who did secure Missouri for the Union