[Warmonger]

I had a Soviet HMG unit on an isolated part of the front. It was a green unit, experience in the 40's, morale in the 50's. It was full strength. It finished off the last 2 visible enemy units and I was trying to move it to another part of the battle. Each turn it gained suppression points until it hit Retreating status and then took off for the edge of the map.

The unit was not out of contact; its command unit was nearby. I wasn't able to rally it so the suppression accumulated. None of the other units nearby acted the same way.

What would cause suppression to be added to this unit?