The siege of Sinhagad, 1670. A small force, a vertical cliff, a single night. The history is dramatic enough without embellishment, which is precisely why the film's embellishments deserve scrutiny.
What the film gets right is the emotional register — the sense that some places hold memory the way temples hold lamps.
What it gets wrong is the suggestion that the past speaks in one voice. The historical Tanaji was more interesting than the cinematic one.