Their advance was halted , but the regiments began carrying out Heinrich Himmler 's orders : behind the lines , special SS , police and `` Wehrmacht '' groups went from house to house , shooting the inhabitants regardless of age or gender and burning their bodies .
Their advance was halted , but the regiments began carrying out Heinrich Himmler 's orders to kill civilians . Special SS , police and `` Wehrmacht '' groups went from house to house , shooting the people and burning their bodies .