noun
petty officer second class (IJN); petty officer (RN); petty officer second class (USN)
Historical rank in the Imperial Japanese Navy, equivalent to a petty officer second class in the US Navy or a petty officer in the Royal Navy. Used in military contexts, especially when discussing WWII-era naval forces.
彼の祖父は旧日本海軍の二等兵曹だった。
His grandfather was a petty officer second class in the Imperial Japanese Navy.
二等兵曹は下士官の一つで、兵曹長の下に位置した。
Petty officer second class was one of the non-commissioned officer ranks, positioned below chief petty officer.
Compound of 二等 (second class) and 兵曹 (a naval non-commissioned officer rank). The term is specific to the Imperial Japanese Navy and is no longer in active use.