士官|しかんshikan[1]atamadaka (head-high)

1. noun, militaryofficer
   彼かれは海軍かいぐん士官しかんの任務にんむを受うけた。↗

   He has received a commission as a naval officer.

• Synonym将校しょうこうWrittenWritten word for commissioned military officers, frequent in the old Japanese army; 「士官」 appears in 「士官学校」, and the modern Self-Defense Forces call officers 「幹部」.
• RelatedオフィサーNeutralNeutral loanword for officers; also used for company executives and police officers, so its range is broader than 「士官」.
• Antonym兵士へいしNeutralCommon word for a soldier; it is the opposite of 「士官」, the class of officers who command.
• Antonym兵卒へいそつWrittenWritten word for ordinary soldiers, the rank and file; it stands opposite 「士官」, which refers to officers.

For military officers say 「士官」, as in 「士官学校」; it also covers senior ship's officers such as the captain. 「将校」 is a written word common in the old Japanese army, 「オフィサー」 is a broader loanword, and 「兵士」/「兵卒」 are the enlisted opposite.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 将官しょうかん、佐官さかん、尉官いかんの総称そうしょう。元帥げんすいの下もと、下士官かしかん、准士官じゅんしかんの上うえ。
2. 船舶せんぱくにおける船長せんちょう、航海士こうかいしなどの高級こうきゅう船員せんいん。
3. 川中島かわなかじま将棋しょうぎの駒こま。