I am curious, are you a military veteran?
No, I read a lot of history and saw a lot of situations were armies fell apart because they didn't prepare properly. For example Napoleon was an unstoppable force until he went into Russia without adequate supply lines and unprepared with proper equipment. He got his tail handed to him bigly. This stuff matters.
A lightning strike like what went down in the French Revolution isn't likely in this scenario, in part because we don't have a single person we could take down and end up in control of the whole government.