You have to admit Sun Tzu gave the advice of not fighting a front war much less a four of five front war.
Which is kind of ironic, naming your book Art of War then explaining how one should avoid it (or false advertising)
He also stated that you have to keep you forces supplied in order to keep your combat effectiveness. He should have let his Generals be generals and not been an armchair quarterback from a safe bunker.
Of course his generals said he shouldn't remilitarize Rheinland, annex Austria or Sudets and should do a re-run of Schlieffen plan to defeat France and that Sickle cut plan sucks more ass that Röhm, so that's also that.....