And they obeyed. Not because they wanted to. Because the command became a current. To resist was to try to swim upstream in a flash flood.
Since this isn't a widely known official title (it may be a homebrew RPG item, a fan fiction concept, or a new magic system), I have drafted based on the most likely interpretations. Choose the one that fits your project best. Option 1: High Fantasy Magic Item (e.g., D&D / Pathfinder) Title: The Master of Command Torrent Wondrous Item, Legendary (Requires Attunement by a Warlord or Battlemaster) master of command torrent
Description: A churning, liquid gauntlet made of solidified stormwater and whispers. When worn, it does not feel wet; instead, it hums with the weight of a thousand shouted orders across a battlefield. And they obeyed
It sounds like you're looking for a (a written description, backstory, or game design document) for something called "Master of Command Torrent." To resist was to try to swim upstream in a flash flood
They do not teach the Master of Command Torrent in the academies. The academies teach strategy—the neat lines of cavalry, the flanking maneuvers, the supply chains.