National Guards are part of US military (under military court jurisdiction with military rules of engagement). Here is an incomplete list of all the times US Government has “Sent in the Troops” on US civilians
1791–1794 https://en.wikipedia.org/wiki/Whiskey_Rebellion
1863 Lincoln declared Martial Law. https://en.wikipedia.org/wiki/Habeas_Corpus_Suspension_Act_(1863)
