军事
jūnshì · HSK 6
military affairs
⚔️🪖 军 (army) + 事 (affairs) = army affairs, i.e. military matters
军 means army or troops, 事 means affairs or matters. Together they cover everything related to military operations and warfare — the business of armies.
事 — hand 又 holding a banner/tablet on a pole
Originally a pictograph of a hand (又) grasping a pole or ceremonial banner used by an official, depicting the act of conducting court business. From this it came to mean 'affair, matter, business, service.' It shares an ancient origin with 史 (scribe) and 吏 (official).