sentences:  Over 100 revolts and uprisings occurred in at least 19 ghettos and elsewhere in Eastern Europe.The best known is the Warsaw Ghetto Uprising in April 1943, when the Germans arrived to send the remaining inhabitants to extermination camps.Forced to retreat on 19 April from the ŻOB and ŻZW fighters, they returned later that day under the command of SS General Jürgen Stroop (author of the Stroop Report about the uprising).