What fact contradicts the determination of the resistance to save Jews

They didn't abandon the Jews. The children start to go to, but prisoners tell them to go back to their blocks, warning them that the Germans are going to shoot everyone. On the way back, they learn that "the camp resistance organization had decided not to abandon the Jews and was going to prevent their being liquidated." The next day there is a roll call, and the head of Buchenwald announces that the camp is to be liquidated. Ten blocks of deportees would be evacuated each day, and no more food would be distributed. On April 10, the remaining 20,000 prisoners are to be evacuated and the camp blown up. A siren alert occurs, however, and the evacuation is postponed to the next day. Nobody had eaten anything for six days. The next morning the resistance movement suddenly battles the SS in the assembly place. The SS flees, and resistance takes charge of the camp. At six in the evening, the first American tank arrives at Buchenwald.