Complex sentence: On 16 April 1945,1000 people from Weimar under American command were mandated to visit Buchenwald concentration camp where they could witness the remaining traces of the mass extinction; and elsewhere residents had to bury the victims from the evacuation marches.
Split into simpler sentences: On 16 April 1945,1000 people from Weimar under American command were mandated to visit Buchenwald concentration camp where they could witness the remaining traces of the mass extinction. Elsewhere nearby residents had to bury the victims from the evacuation marches.