At many of Flossenbürg's subcamps, the SS massacred sick Jewish prisoners before evacuating. Including these massacres, the death marches cost the lives of about 7,000 prisoners from Flossenbürg and its subcamps. The 90th Infantry Division of the United States Army liberated the main camp on 23 April and found 1,527 ill and weak prisoners in the camp hospital; more than 100 prisoners had died in the preceding three days. Despite the efforts of American medics, only 1,208 prisoners survived the immediate aftermath of liberation. Initially, the American authorities ordered the bodies to be burned in the camp crematorium, but after protests from the survivors, held a funeral for 21 former prisoners on 3 May. Some of Flossenbürg's eastern subcamps, located east of the demarcation line, were liberated by the Red Army.