"Gengis Khan drops off of it. He sent a fleet unprepared into a hurricane and lost the Japanese campaign. The GREATEST commanders mastered both the land and supply by sea."
That was Kublai Khan and not Genghiz Khan. Genghiz never lost a war in his glorious military career that spanned over 50 years.
I would say General Pershing for ordering the massive attack on the morning of Armistice Day, knowing the German enemy would be caught unprepared believing an attack offering no strategic value would occur on the last day of the war. I can only imagine the German reaction while sipping champagne and writing their last love letters only to see a massive American invasion force charging a mere hours before the end of the war. Brilliant!
Fair enough.
If Ghengis Khan suffered no defeats and built that empire, I'd put him on the list. Commanding a horde of barbarians is damned difficult work (just ask Al Zarqawi).