Why quite a lot hospitals are called memorial hospital?

Why quite a lot hospitals are called memorial hospital? And what makes them different from the others?

Thanks

Memorial means built or named to commemorate a person or event. For example, the Walter Reed General Hospital is named for the U.S. Army physician who lead the team that proved yellow fever was transmitted by mosquitoes, thus advancing the workers’ health in building the Panama Canal. In that sense, it is a memorial hospital, even though the word “memorial” isn’t included in its name.

Some administrators of hospitals choose the name memorial without actually having any person or event in mind. They simply like the word or they want a longer name than simply “Smithville Hospital”. Languages sometimes have additives for no apparent reason. That’s why in Mandarin Chinese, they almost never speak one character. The food shaped like a packet (bao) is called bao-zi. The zi character has no special meaning. It simply improves the sound as far as the Chinese are concerned.

Thank you Lance