统帅 (tǒng shuài) is a formal noun meaning 'supreme commander'—the highest-ranking military leader who directs overall strategy and operations. The character 统 (tǒng) means 'to unify', 'to coordinate', or 'to control centrally', while 帅 (shuài) means 'military commander' or 'leader'. Together, they emphasize centralized, authoritative leadership over an entire armed force—not just a unit or division, but the whole army or coalition.

This term appears in historical texts, official military documents, news reports about national defense, and formal speeches. It carries strong connotations of authority, responsibility, and strategic vision. Unlike general terms like 将军 (jiāngjūn, 'general'), 统帅 implies ultimate decision-making power and national-level command. It is rarely used in casual speech and almost never for non-military contexts—even metaphorical use is uncommon and highly stylized.