Easy to say in hindsight. After what the world had just been through saving these engines, etc. for posterity was probably the last thing on the authorities minds.
I’m aware of the situation around 1945 😀
The idea was total disarmament. Including tents, phones, timber and everything else, that the armed forces was using.
The Danish army managed to kling on to a few canons. The Norwegians got a few aircraft (transport).
Besides that, as always, a number of items flowed into the black market, but mostly petrol, oil, grease, tires, tubes and building materials. As mentioned, I’m sure a number of aviation items also “dissapeared”. Hopefully someone will find a horde of engines in his/her grandfathers celler one day.
The victors might also have had things they wanted to sell, even if that wasn’t a top priority.