A good start is to set up a simple checklist. First, write out a timeline of the real events in plain dates and facts. Then, line up the script’s scenes next to that timeline. Note where the dates match, where they shift, and where a scene is added or removed. For each change, ask what purpose it serves—plot, character depth, or pacing. Next, gather a few reputable sources: primary documents, scholarly books, and maybe a historian’s quick review. Cross‑check those with your notes. If a scene’s deviation is dramatic, mark it and see if it still feels true to the spirit of the era. Finally, keep a running list of “questionable” moments to discuss with the writers or director. That keeps the drama grounded while still allowing creative freedom.

Sounds like a solid plan—just remember the story is the heart, so weight the score with how it feels on stage as well as in the books. A quick chart with impact and plausibility will let the team see where the drama is true to life and where it just needs a little polish.