 In this latter case, all junior enlisted personnel assigned to a mess would be put on a roster and regularly receive assignments to KP duty on a rotating basis.KP duties, however, can include any tedious chores in the military mess at an installation or in the field, such as food preparation, although not cooking, or the more obvious dish washing and pot scrubbing, sweeping and mopping floors, wiping tables, serving food on the chow line, or anything else the kitchen staff sees fit to assign to its KP crew.KP duty can be particularly onerous because it is on top of all regular duties, as institutional kitchens often open before and close after regular duty hours, and generate large volumes of unpleasant food wastes.