Milley, ever the historian, thought of the little remembered 1905 revolution in Russia. The uprising had failed, but it had set the stage for the successful 1917 revolution that led to the creation of the Soviet Union. Vladimir Lenin, the leader of the 1917 revolution, had later called the 1905 revolution “The Great Dress Rehearsal.” Had January 6 been a dress rehearsal? Milley told senior staff, “What you might have seen was a precursor to something far worse down the road.”

