I know this is a very popular view on FR, and certainly Nazism bears no resemblance to American style conservatism springing as it does from the American founding documents, written by profoundly liberty-loving men who would have abhored the statist solutions proposed by the Nazis.
Nevertheless it is not correct to assert that the Nazis were a party of the left, and indeed no leftwing party either in Europe or America supported them at any time. The Soviet Pact was a cynical political calculation by both Stalin and Hitler and doesn't count. But many European conservatives and quite a few American conservatives (Father Coughlin, Charles Lindberg) did support them. The Nazis were the sworn enemies of the communists, fought them in the streets of Munich and executed them promiscuously when they came to power.
Nazi economic policies echoed those of Musslini's Fascists (an appellation many don't realize Hitler disdained and never adopted) in that they practiced "capitalism with an iron fist." Economic hierarchies and accomodation for the wealthy were Nazi policies that would certainly not have been a part of a leftwing government had the communists come to power in Germany.
The Nazis were totalitarian statists, and, again, resembled not at all true American conservatives in most respects, but just because they promoted state authority far above anything a true American conservative would countenance does not mean that they were leftists. Dictatorships of the right are also a historical possibility, and Hitler made just such a dictatorship a reality in Germany in 1933.
Great post!
George W. Bush (and former President Bush) are alive.
Ergo, Bush is NOT Hitler.