Ok, let's play a game for a second. Every state splits from the union and they end up as 50 different countries. All independent and self governing. All the federal troops stationed in each state are absorbed into the state they are in. So lets say the US military has 15,000 troops in wisconsin, all those troops would now be soldiers of wisconsin. This goes for all federal equitment, weapons, healthcare, etc.
So, you decide, who would be the most powerful out of these 50 nations?