Let me just say that I appreciated that Milley stood in the breech against Trump and then named names in the Jan 6 hearings. He did not allow Trump to arrest and court-martial retired military officers for criticizing Trump.
https://www.govinfo.gov/content/pkg/GPO-J6-TRANSCRIPT-CTRL0000034620/pdf/GPO-J6-TRANSCRIPT-CTRL0000034620.pdf