《military》captain (Army, US Marine Corps, USAF); lieutenant (Navy); flight lieutenant (RAF, RAAF, RNZAF, etc.)
大尉は部下に作戦の内容を説明した。
The captain explained the details of the mission to his subordinates.
彼女は海軍で大尉の階級を持つ。
She holds the rank of lieutenant in the navy.
大尉に昇進した祝いにパーティーを開いた。
A party was held to celebrate his promotion to captain.