Sorry, the feds know full well to keep control of all the assets of the armed forces. Most of the NG hierarchy are not going to risk their hides neither are the reservists. Places like the guard/reserve base at Meridian will be quickly under federal control by a cadre from nearby Columbus AFB and ‘loyalist guard/reservists. Does anyone really believe masses of guard rank and file are going turn out to fight the regulars. These people are far from heroes and mostly in the guard for the extra pay and commissary privileges, they have no interest in fighting and are not going to risk jobs, mortgaged house and a normal life and leaving their families flat broke and their wives and other family members screeching at them to go off to fight the regulars, who they know are a hell of a lot better at this stuff than they are.
Also a fair number of these people are negroes who sure have no interest in some whitey secession excursion. You are just indulging in a fantasy. The regulars plus FBI/DHS would crush any fools who would try some foolishness in a matter of a few weeks, or a few days.
Where do you think weapons are made? Texas makes moat of the guided weapons. Many can be shipped in. There are 3,000 counties in the USA and 500,000 active duty army ( mostley woke remfs ). That is 166 soldiers per county. The standing army is a joke.