Ill be real, it being less than an hour, I am assuming this was either a miscommunication or something that was already planned and there wasn't enough time to tell all the troops about the deal yet.
That theory would fit with the top-down, punishment-for showing-initiative, no-NCO, no-trust, bloody fuckups that have made the Russian military famous.
Hitler promises to not invade the rest of czechoslovakia
Chaimberlin returns home, waiving the paper in the air, declairing war to be avoided and we erected statues of him and every day on the 5th march we celebrate chaimberlin day!