The archduke is pretty comical. He has been fighting the Oder for a long time and that has made him view himself as the only commander that could possibly fight them. However, he doesn't seem to realise that for all of his fighting, he hasn't actually stopped, let alone defeated the Oder. He's just fighting a slow losing war, depleting his own resources and now possibly the reinforcement resources. This shows his method is only a method to slow down the Oder, not to defeat them or even beat them back. Let's hope he gets a cracked skull this time so that some reason could find its way to his brain. Clearly nothing is reaching his mind through his ears.