I cannot find supporting material for the alt name "赤柱國殤紀念墳場". The name "赤柱國殤紀念墳場" does not appear on any signs on site. You can only find "赤柱軍人墳場" there.
So, the same sould be shown on the OSM map.
In contrast, the "Sai Wan War Cemetery", the name in Chinese is "西灣國殤紀念墳場" which appears on more than one sign around the cemetery.