In 2016 the Russians opened a vault outside of Moscow and discovered over 100 scrolls that the Red Army had seized when they drove
the Nazis out of Hungary in early 1945.  How did these scrolls survive?  Hungary, under the dictatorship of the fascist Admiral Horthy, was allied with Nazi Germany, so the Nazis did not invade Hungary until March 19, 1944, by which time the German army was in full retreat from the advancing Red Army of the Soviet Union, which was nearing the Hungarian-Soviet border.  The Nazis had to act fast to murder Hungary's Jews. Although they managed to destroy most of Hungary’s Torahs, they apparently overlooked these 100 plus scrolls, which were seized by the advancing Red Army and taken to a vault near Moscow where they were forgotten until 2016. Thanks to an agreement brokered by the U.S. State Department, the Russian government returned the scrolls to Hungary, where they have been placed in synagogues and museums.
 
Otherwise, the only Torahs that survived the Shoah, other than the 1,800 Czech scrolls, were the handful that German Jews had managed to remove from their synagogues on Kristallnacht before the mobs came to destroy the synagogues and Torahs. German Jews then managed to take a handful out of continental Europe before World War II began on October 1, 1939.