auerstedt battle of eylau battle of friedland battle of golymin battle of heilsberg battle of saalfeld battle of schleiz carl von clausewitz electorate of saxony first french empire francis fukuyama frederick william iii of prussia georg wilhelm friedrich hegel gerhard von scharnhorst germany jena joachim murat kingdom of prussia louis friant napoleon i of france philosophy prussia russia saale the end of history and the last man university of jena war of the fourth coalition weimar william i of the netherlands