Schron bojowy dla km. Regelbau C-1 is a military bunker located in western Poland near the town of Chojna. Built during World War II, this Regelbau C-1 type structure represents the standardized German defensive architecture of the period. The bunker forms part of Poland's extensive network of wartime fortifications that were constructed during the German occupation.
These defensive structures were designed to provide protected firing positions and shelter for military personnel during combat operations.