In what way were German fathers "assholes" during World War I?
Starting the war... Invading neutral countries... Sinking ships of neutral countries... Introducing chemical (poison gas) warfare... Executing "over 6,500 French and Belgian civilians between August and November 1914, usually in near-random large-scale shootings of civilians ordered by junior German officers." etc., etc.
the next generation doesn't tend to copy his behavior.
They did, and took it up a notch, too.
"it was common for Germans in the 1930s to justify acts of aggression in terms of perceived injustices imposed by the victors of World War I."