Ummmm the written law....
There are crimes that if you are clearly convicted of them you are barred or disqualified from holding or running for public office. Its stated clearly and its not a surprise or a grey area. If Trump is indicted & convicted of this, it's definitely one of them.
The feeling of military members are of no consequence. They can only impact our government iwith their votes like everybody else.
A government that is run by its military wing is called a Military Dictatorship. It is no longer a free country. It is no longer a democratic republic. It literally goes against every principle and right this country was founded on. That's called a military coup. You see it a lot in 3rd world countries and in a lot of African countries that are extremely poor and unstable. Some of the worst and most dangerous places on the globe.