 SPOILER: The individual incidents in the film are mostly true, but  were rearranged as to both the timing and the people involved. (A  note at the start of the film acknowledges this.) For instance, of  the 76 who escaped, there were indeed 3 who got away and 50 who were  murdered in reprisal, but the murders occurred in small groups, not  all at once. (14 Germans were executed after the war for their parts  in them.)