but one peculiarly irrational aspect of the holocaust was when Germany was losing the war, they expended a great deal of time, energy and resources rounding up Jews and sending them to the camps that could have been used in their own war effort.
1) When Germany started Holocaust, they were still winning the war and / or balance of forces was evenly matched (1941 - 1942).
2) I suppose they had the illusion that they could win even relatively late in the war (even after Kursk).
3) On one hand they were expending resources, on the other hand gaining resources of their victims.
About the rest, you have no reason to think that there was a genocide with more meaning and determination to extinct people than the Holocaust.
It is possible. But this is a matter of subjective view - we can't empirically prove this beyond a reasonable doubt.
"Determination to extinct people" cannot be empirically measured. Certainly in all genocides in history the oppressors had it.
I see no reason to say that the Nazis were more determined to kill Jews than they were to kill Gypsies, for example. Of course the Jewish martyrology has been stronger and better organized than the Romani martyrology - that's one of reasons why the Holocaust is more famous than the Pharrajimos.
Remember that there were still many European Jews who survived the Holocaust. Even if they already were imprisoned in camps. Some of the Jews were even considered as useful (at least temporarily) for Nazi Germany. For example Jewish Nazi collaborators or Jewish Police in the Ghetto Uprising.
I've read that Holocaust survivors who came to Palestine after 1945 were contemptuously called by local Mizrahi (Eastern) Jews "soap".
That's because those Jews who didn't experience the Holocaust, considered those who did as weak people, who didn't even try to oppose it. Victims were not well regarded in a society that believes in the "cult of force" - such as the post-war state of Israel, surrounded by enemies from all sides.
Especially Mizrahi Jews, who lived next to their Muslim neighbours for centuries and there were mutual antagonisms between them.
BTW - already in pre-war times there were also antagonisms between Yekkie ("Atlantic") Jews and Osti (East European) Jews.
Yekkie considered Osti as rather backward (or maybe very traditional - in a negative for them sense) and uneducated people.
Yekkie had their Zionism, while Osti had their Yeshiva - Osti were more religious and traditional, while less nationalist than Yekkie.
And btw, they didn't end up with the transportions not because they couldn't, just because they started to think about Nazism as a global plan. It wasn't like that at the beggining.
Sorry I don't understand what exactly you mean here. Can you explain it further?
Oh. And here I thought this thread was going to be about the Japanese-run internment camps during WW2.
Derp.
Yeah. I thought the same. And I was also very surprised to see the "Jewish concentration camps" in the title.
It seems that Obama is not alone in unfortunate use of adjectives.