Your encircled troops are in a grave situation. They are suffering from hunger, sickness and cold. The harsh Russian winter is only just beginning: hard frosts, cold winds and snowstorms are still to come, but your soldiers do not have winter uniforms and are living in unsanitary conditions. You, as commander, and all the officers of the surrounded troops know very well that there is no longer any realistic possibility of breaking through the encirclement.
Life accordingly evolved into a blur of continuous work, people dying, guards bellowing, heavy loads to be carried, fever which came in tides of heat and cold on alternate days, dysentery and hunger. All those became the normal. Upon them, occasionally, an event super-imposed itself with suflicient violence to be remembered.