Schindler's List to Lincoln to 12 Years a Slave to Oppenheimer. The genre that takes the historical record seriously enough to argue with it.
Historical drama is the genre whose central question is fidelity. Every historical film must, by structural necessity, compress, omit, invent, and reframe. The genre's most-respected entries are the ones that make the compromises consciously and in service of a clear interpretation, rather than treating historical material as backdrop for invented drama.
Almost every major historical drama produces a public argument about its accuracy. Lincoln's depiction of the Thirteenth Amendment vote was disputed by historians (the Connecticut representatives' votes in the film are wrong; actual roll-call records contradict the film's depiction). Braveheart's depiction of medieval Scotland is, by general historical consensus, almost entirely invented. The Patriot's depiction of British colonial brutality compressed multiple incidents into single composite scenes.
The defense of these compromises is that historical drama is, ultimately, dramatic rather than journalistic. The film's argument has to land in two hours; the historical record, in many cases, would not produce a dramatic structure on its own. The best historical dramas are open about this — the script's compressions are in service of the film's argument, not in service of misleading the audience about the literal record. The worst examples invent freely and present the inventions as documentation.