strategy: [17] Etymologically, strategy denotes ‘leading an army’. It comes ultimately from Greek stratēgós ‘commander-in-chief, general’, a compound noun formed from stratós ‘army’ and ágein ‘lead’ (a relative of English act, agent, etc). From it was formed stratēgíā ‘generalship’, which reached English via French stratégie. Another derivative was stratēgeīn ‘be a general’, which in turn spawned stratégēma ‘act of a general’. This passed via Latin stratēgēma and French stratagème into English as stratagem [15]. [strategy etymology, strategy origin, 英语词源]