Reading List for Soldiers

I only recently became aware that there are official reading lists for U.S. soldiers, ordered by rank; e.g., enlisted personnel read these four books, captains read these five, etc.

I would be interested in hearing from anyone who has knowledge of how these lists are used. If you've been a soldier, were you given lists with the option of reading the appropriate books? Were you ordered to read any of them, or rewarded for having done so? Or have you never heard of these lists?

If you have not been a soldier, do you know anyone who might comment on these book lists--dad, uncle, best friend, etc.? And if you don't live in the U.S., do you know if your country has a similar program?

Thanks! I look forward to hearing from you.