The research article deals with different regulatory and doctrinal (mostly based on Polish and Ukrainian sources) concepts of foreign occupation and current means of its enforcement, providing a description of the legal, political and social consequences caused by it, which are primarily suffered by the civilian population as a non-combatant, with the possibility of a full or partial retrospective analogy. The authors have concluded when the foreign occupation, from one hand, is committed aggressively to seize the alien territory and enslave its population the list of criminal manifestations of occupation state is quite wide and, unfortunately, endless. On the other hand, the possibility of establishing a real legal regime of foreign occupation is seen when the occupation is carried out as a countermeasure to the occupation with the aim of overcoming its negative consequences, restoring law and order and life in the de-occupied territory with the collective participation of international organizations, that will be the subject of further publications