“As senior leaders everything you do will be closely watched and I am not immune. As many of you saw the result of that photograph of me at Lafayette Square last week that sparked a debate of the role of the military in civil society. I should not have been there. My presence in that moment and that environment created a perception of the military involved in domestic politics.”
-General Milley.
https://www.thegatewaypundit.com/2020/06/never-gen-mark-milley-stands-mob-apologizes-walking-torched-st-johns-church-president-trump-video/
Trump 2016 Inauguration at 3:59
https://youtu.be/a-mfhjaPvsM?t=239
1) Presidential inaugurations are political.
2) A President is political and commander in chief.
3) The U.S. Constitution is a political document.
4) Soldiers swear:
"I, _____, do solemnly swear (or affirm) that I will support and defend the Constitution of the United States against all enemies, foreign and domestic; that I will bear true faith and allegiance to the same; and that I will obey the orders of the President of the United States and the orders of the officers appointed over me, according to regulations and the Uniform Code of Military Justice. So help me God." (Title 10, US Code; Act of 5 May 1960 replacing the wording first adopted in 1789, with amendment effective 5 October 1962)."
https://www.army.mil/values/oath.html
Therefore: All military personnel are required to be in domestic politics as they were in the 2017 Presidential Inauguration. If there is only a perception you are in domestic politics, you aren't fulfilling your oath properly.