If you're going to consider the effects of the Holocaust you should consider all of the effects. WWII was not part of the Holocaust and was ancillary to it. The Nazis stole the property of displaced Jews, whether they were sent to concentration camps or simply decided to emigrate. This property included art, jewels, money in bank accounts, cars, real estate, and raw materials. It is estimated that $18 billion in Jewish property was confiscated (stolen) by the Nazis, and most of it was never returned after the war, as the owners were dead. This property funded at least one third of the German war effort.
"Prof Ullmann said, "Conservatively, their money financed at least 30 per cent of the German war effort." Christine Kuller of the University of Munich, who also worked on the study, said tax offices built whole hierarchies of bureaucrats "who discovered dwellings and bank accounts and emptied them". The bureaucrats then disposed of all traces of those who disappeared in the extermination camps."
Yes, the Nazis were extremely efficient, and ultimately unsuccessful, but their lack of success doesn't mean they weren't also efficient.
Edited by MFFJM2, : No reason given.