Prepper, I guess so. Not really closet though. In the military one has the rucksack for use in the field; also, duffel bags designated A bag, B bag, C bag...etc. which have specified packing lists. One may contain extra field uniforms and related gear, another might have dress uniforms and civilian clothing, A third could hold cold weather clothing and gear. Everyone is told what bag(s) to bring depending on the nature and duration of a deployment. It's an open preparation process.