How serious was the "attempted coup" against our government?

[Gaugamela]

69. I respect the military brass, but when push comes to shove I do not think they would disobey a

lawful order. And again, the question is what would Trump attempt. Consider what Trump might reasonably suspect would happen: the mob overruns the Capitol, the mob seizes and very possibly murders Pence and members of congress. Counter protesters which Trump expected to be there are part of the melee and Trump blames Antifa and BLM for all the violence. Bombs go off at the headquarters of the RNC and the DNC. Trump invokes the the insurrection act and legally calls out the military and the National Guard to enforce order. All over the country people are taking to the streets in numbers never seen before against a right wing coup. Hawley, Cruz, Cotten, et al are on TV bellowing about a leftist attempt to overthrow the government and the constitution. Right wing media are screaming at the top of their lungs about the clear duty of the military top brass to support their commander in chief. So — on what basis would Milley have disobeyed lawful orders, even if he wanted to? Again, this is how Trump sees this thing playing out. Trump is looking at losing his legal immunity and facing all kinds of litigation and prosecution. His business could collapse. He’s the worst kind of narcissist and a moron. What would stop him from trying?

Here is info on Milley from Wikipedia:

On June 1, 2020, during protests in Washington, D.C., in the wake of the murder of George Floyd, Milley joined National Guardsmen and various police forces assembling in Lafayette Square, across the street from the White House.[50] Minutes later, the troops and police used tear gas and other riot control tactics to disperse peaceful protestors so President Trump could stage a photo-op at nearby St. John's Episcopal Church. About half an hour after that, Milley, in combat uniform, walked alongside the president from the White House to the church, drawing sharp criticism from former military officers and others.[51][52][53][54][55][56] Milley subsequently refused to testify in front of Congress regarding the military's role in the response to the protests.[57] He reportedly considered resigning over the incident,[58] but chose instead to address it in a video recorded as his commencement address to the National Defense University. In that speech, streamed on June 11, Milley said he should not have been at the event because his presence created a perception of military involvement in domestic politics.[59] Milley testified in front of Congress in July 2020 about the military's role in the George Floyd protests.[60]