The Von Trapp kids *hated* how their father was portrayed in ‘The Sound of Music’ they thought it was a slanderous caricature.
I’m not surprised. TTLS does not portray a martinet; a martinet would never have gotten that mess of a U-boat crew to do anything.
They had written them backwards. It was Maria who was the mean, controlling parent (she locked away one of the daughters so she couldn’t meet a boyfriend). Georg was kind and fun-loving.