Despite enormous obstacles, many Jews throughout German-occupied Europe attempted armed resistance against the Germans. Individual Jews or groups of Jews engaged in planned or spontaneous opposition to the Germans and their allies. Jewish partisans were especially active in the east, where they fought the Germans from bases established behind the front lines in forests and ghettos. Because antisemitism was widespread there, they found little support among the surrounding population. Even so, as many as 20,000 Jews fought the Germans in the forests of eastern Europe.