A Role Playing Video Game played like a Turn-Based Strategy or Real Time Strategy. They might have towns, dungeons, and overworlds like a typical RPG, but the battles are played on a field where you must move your players and command them, in a form of Turn Based Tactics.

Keep in mind this requires more than just battles with some strategy elements (which excludes games like Grandia and The Last Remnant), and more than strategy games with some RPG Elements (which excludes games like Heroes of Might and Magic).

For more info, see the Wikipedia page Tactical role-playing game.