>>507420122
During the republican period, you had the old french curse, aka disloyalty of the high command. Turns out the generals and admirals didn't like the whole "shortening" of the king and some took the first opportunity to switch sides, so new officers had to be minted quick. I think two regiments went directly to the enemy Austria Hungary, and another disbanded before a fight (from memory).
But among people, the republic was extremely popular. Plus even at the beggining, they had the Sans-Culotte army that provided enough (extremely) willing bodies for all things anti monarchistic