For purposes of description it is convenient to consider the range in four sections, a western, a middle with two subsections, and an eastern.
The Army Groups or the units subordinate to them respectively assigned additional tasks to the Einsatz Groups and their subsections.
The evidence for this is briefly summarized in the following subsections according to conventional cultural-historical periodization.
The better ones will have subsections within the category.
The notebook has sections for each century and in the sections are subsections pages for each decade.