Trump's other Civil War controversy: 'The River Of Blood'

President Trump's recent assertion that Andrew Jackson could have prevented the Civil War is causing some to revisit another unsubstantiated historical claim he has made, reports Vocativ.

It involves a plaque installed between the 14th and 15th holes at his Trump National Golf Club in Northern Virginia.

Titled 'The River of Blood,' the inscription, attributed to Trump himself, reads, "Many great American soldiers, both of the North and South, died at this spot...The casualties were so great that the water would turn red and thus became known as 'The River of Blood.' It is my great honor to have preserved this important section of the Potomac River!"

However, a New York Times report from November 2015 says that multiple local historians have contradicted the assertion including Richard Gillespie, executive director of the Mosby Heritage Area Association, who declared, "Nothing like that ever happened there."

He went on to explain that the closest high-casualty battle around that time happened 11 miles away at the Battle of Ball's Bluff in 1861. The Times also located two other experts who backed Gillespie's position.

Despite the evidence, Trump defended the claim, telling the publication, "That was a prime site for river crossings. So, if people are crossing the river, and you happen to be in a civil war, I would say that people were shot — a lot of them."

And when he was told about the historians who believed otherwise, he reportedly said, "How would they know that? Were they there?"

Trump's most recent controversial comments were made on Monday while speaking with the Washington Examiner.

The president said, in part, "...had Andrew Jackson been a little later, you wouldn't have had the Civil War...he saw what was happening with regard to the Civil War. He said, 'There's no reason for this.'"