noun
senior master sergeant (JASDF)
A specific non-commissioned officer rank in the Japan Air Self-Defense Force, equivalent to a senior master sergeant. Used in military contexts.
彼は空曹長に昇進した。
He was promoted to senior master sergeant.
空曹長は航空自衛隊の上級下士官である。
Senior master sergeant is a senior non-commissioned officer rank in the JASDF.