Levee en Masse allowed revolutionary France to turn from defeat to victory, as it allowed the French army to vastly outnumber the Coalition's professional armies. However, the reason why states turned away from conscription to professional army was to be more efficient on the battlefield. Thus, why would Levee en Masse along with its non-professional conscripts be so effective in the war of First Coalition?
However, the reason why states turned away from conscription to professional army was to be more efficient on the battlefield.
Can you source this claim? It's my understanding that mass conscription is mostly a phenomenon of the 19th-20th centuries. I know that the late Romans occasionally resorted to conscription, but it was on a vastly smaller scale.