How many Allied soldiers do you suppose died because of the irrational insistence on unconditional surrender?

I don't know, you have not established that that insistence was 'irrational'. Whether or not it's correct, you're the first one to connect it to the Rothschilds... who I agree were and are bad people, but they had nothing to do with this or anything.

But England is owned by the Rothschilds, who were very insulted by how the head of the family had been treated

I assume you don't have any evidence for your claims that... the Rothschilds controlled England, as you are providing none.

Germany getting out from under the crippling terms of Versailles would be a minor threat to the hegemony enjoyed by the global superpower called the British Empire.

Germany was a threat to British hegemony even before World War I, which is why first the British and then the Americans entered the war.