The Regelbau 672 is a storage bunker. The Regelbau 672 was used to place temporary / permanently a huge variety of different guns. The Regelbau 672 was usually placed far behind the frontline. There are a couple of examples where they placed the Regelbau 672 next to a big open AA gun emplacement. The AA gun was placed in the Regelbau 672, if there was a threat , they rolled the AA gun out of the bunker and placed in the open emplacement. There are a small number of Regelbau 672 build at the Atlantic wall (12 are known). There still can been seen in Holland in the steallduinse bos. The Regelbau 672 can storage a huge number of different types of guns and ammo, it could vary from 3 peaces of 2 cm AA gun 38 to a 15, 5 cm K 452.