noun
Battle of the Philippine Sea
Historical term for the major naval battle fought on June 19–20, 1944, during World War II.
マリアナ沖海戦は太平洋戦争の転換点の一つとされる。
The Battle of the Philippine Sea is considered one of the turning points of the Pacific War.
Compound of マリアナ (Mariana) + 沖 (offshore) + 海戦 (naval battle), referring to the battle fought in the waters off the Mariana Islands.