I was under the impression that the Das Reich division that committed the reprisal in Oradour placed the explosives in the church  there was no known resistance movement in Oradour There was also no firefight the townsfolk were segregated into men and womenchildren the men ushered into barns where they were eventually shot with machine guns and then set on fire and the church was barricaded and blown up using explosives and grenades For a source refer to various publications such as Robert Hebras account survivor of the massacre and Max Hastings Das Reich    March   UTC