The US military thought a lot about how to entertain its soldiers because there was a lot of downtime during a war and most of them were draftees who didn't necessarily want to be there, Another thing they did was publish pocket paperback editions of books back when paperbacks were less common.
My favorite WW2 morale detail: https://en.wikipedia.org/wiki/Ice_cream_barge
> most of them were draftees who didn't necessarily want to be there
It is called forced labour or slavery.
There were also the 2,400 specially-designed upright pianos it bought from Steinway: https://en.wikipedia.org/wiki/Victory_Vertical .