According to sources, the total number ranged from 10 to 15 million persons.[14] Many of those who were evacuated during the war returned to their homes in the east after May 1945; only to be transferred back to Germany in the following years.[21] The West German Schieder commission estimated based on German ration card data from February/March 1944 that the total civilian German population (des deutschen Bevölkerungsstandes) east of the Oder-Neisse line was 11,924,000 at the end of 1944.[22] Including 9,758,000[23] in pre-war German territory; 134,000 in Memel [24] 404,000 in Danzig[24] and 1,602,000 on occupied Polish territory.[24] According to Schieders calculations included in the total civilian population are 825,000 [23] persons evacuated eastwards to avoid Allied air raids and 1,174,000 Reichsdeutsche and re-settlers from other European nations.[25] Schieder estimated that out of the 11.9 million population in late 1944 east of the Oder-Neisse line at the end of the war 4.4 million remained on Polish territory.[22] More recent research in Poland puts the Germans in the fall of 1944 on the current Polish territory at 12,339,400 including 8,885,400 on pre-war German territory and Danzig; 670,000 in occupied Polish territory; 900,000 re-settlers from other European nations; 750,000 German occupation administrators and 1,134,000 persons evacuated eastwards to avoid Allied air raids [26] According to Rudiger Overmans the West German search service was able to confirm the deaths of 93,283 civilians due to the wartime flight and evacuations including 86,860 from the territory of present-day Poland and the Russian Kaliningrad region.[15] According to the German Federal Archives 100,000 to 120,000 civilians were killed during the wartime flight and evacuation from the territory east of the Oder Neisse line.[27]