noun
technical sergeant (JASDF)
A specific rank in the Japan Air Self-Defense Force, equivalent to technical sergeant. Used in military contexts.
彼は二等空曹に昇進した。
He was promoted to technical sergeant.
二等空曹の階級章を見せてもらった。
I was shown the rank insignia of a technical sergeant.
Compound of 二等 (second class) + 空曹 (air sergeant), a rank designation in the JASDF.