Mel Brooks History of The World part 1 to name one

U-571 has to take the crown surely? It portrays the USA as winning WWII by capturing the Nazi enigma machine. Problem is Britain and Poland had already been doing this sort of thing before the US joined the war. Plus that film falsely portrays a period where there is extensive reliable empirical data. Whereas Braveheart dates back to a time where the reality of events will be more murky.

We do know that Wallace was a real person. He won a battle at Stirling, lost one at Falkirk, was captured and executed. All central themes of the film.

Braveheart Might Be The Most Historically Inaccurate Movie Ever Made https://www.ranker.com/list/historical-mistakes-errors-and-inaccuracies-in-braveheart/machk

"...William Wallace was an actual Scottish rebel... during the reign of King William I until his execution in 1305. The bad news is, pretty much everything else in Braveheart is wrong."

William Wallace Was Not 'Braveheart' It was the name given to Robert the Bruce, a Scottish hero who is portrayed as a traitor in the film. He was given the name posthumously when, according to his wishes, his heart was removed and taken to be buried in Scotland.

The Timeline Of The Movie Is Completely Wrong ...The film opens in 1276, at which point in reality King Alexander III of Scotland was still alive and the English weren't yet making much of a fuss over Scotland. The rebellion began in 1296. Additionally, in reality King Edward I did not die at the same time as William Wallace as the film suggests, he died several years later. King Edward II did not marry Isabella until after Wallace's death, at which time she was 13, considerably younger than the 29-year-old Sophie Marceau who played her in the film.

There Is No Evidence Of A Fake Scottish Summit.
William's Father Did Not Die During His Childhood.
There Was No Uncle Argyle.
William Wallace Was No Commoner.
Throughout Braveheart, the viewer is reminded that William Wallace comes from humble means. The nobles refer to him as a commoner, his burlap outfits are covered in dirt, and the roof of his house is made of straw. This... is fiction. The Wallaces were a longstanding and noble family and William's father, Malcolm, was a knight. William would have had an excellent education and military training. Oh, and he wasn't a Highlander, either. He was from the Lowlands, of the same Anglo-Norman descent as his English rivals.

Bagpipes Were Not Banned.
King William I Was Not A Pagan.
King Edward II was not a gay stereotype.
The [Supposed] Lover of Edward II Was Not Thrown Out Of A Window By Edward I.
The Scots Never Sacked York ...Wallace and his men never sacked York, they looted and destroyed the city of Carlisle.
The English Soldiers Did Not Wear Matching Uniforms.

Well having Ghetto blasters in ancient Rome seems rather far fetched