“(a) Work units for construction of all kinds, particularly for the fortification of coastal defenses (concrete workers, unloading units for essential war plants).
“(b) Suitable armament factories which are to be selected in such a way that their personnel will consist in the majority of prisoners of war under guidance and supervision (upon withdrawal and other employment of the German workers).
“III. Other war industries.
“(a) Mining as under II (b).
“(b) Railroad construction units for building tracks, et cetera.