Originally posted by G-Man
The final solution didn't start in 1943, but in 1941, when the German forces invading eastern europe were accompanied by units whose purpose was to kill people belonging to groups opposing the reich and people whom the reich didn't want - mostly jews.
As to phoenix' question, killing all jews was probably not THE plan untill 1941, but it was one of several plans the Nazis had for "solving the jewish problem" even before they rose to power.
The term Endloesung, or final solution, is used for the systematical murder on all European Jews. The holocaust is a bit broader. The 'Einsatzgruppe' of which G-Man is talking about were indeed used to kill Jews in espacially Poland and Soviet Republics.
The order for the Endloesung it self, meaning the deportation and murdering of all jews in all of the occupied areas (Holland, Belgium, France, including more or less colaborating countries (Hungary, Romania, Slovakia) was given by Hitler / Himmler at the Warnsee conference, which was in spring 1942, iirc. It was carried out by Heidrich and Eichmann.
According to several whitnesses, Hitler's hatred towards Jews was real. From somewhere in the beginnign of the 20s, he was convinced there should not be Jews in (Greater) Germany. During the 30s there were indeed plans to found a Jewish nation on Madagaskar. Also, zionism was sponsored by an SD-program. Ironically, this was the task of Adolf Eichmann somewhere in the 30s.
Once the war had started and not easily won by the Germans, murdering all Jews seemed to be the only option left, in the bizar view of Hitler and Himmler.....
Final note: The document made at the Warnsee conference, was never found after the war. It has probably been destroyed. Both Dieter Wislency in 1945/46 and Eichmann in 1960/61 testified they had seen the order.