England are 2-0 down in the five-Test series and must draw or win here to keep the series alive and have any hope of retaining the Ashes.
But to do so they would have to become the first team ever to come from 2-0 down and not lose a series.
Flintoff said the current English team was capable of turning the series around.
"The team have been great throughout (the series)," Flintoff said. "There's still that confidence and the calmness that we've had all along in this trip.
"It's a side full of character and that character will have to come out in this Test.
"We're a very close unit as a side and we've stayed that way and we'll remain that way for the remainder of the trip and going forward as well."
Flintoff said the English players were proud of what they had achieved over the past three or four years.
"We want to carry on doing that - we want to carry on creating history as a team," he said.
"It's something that we're very much aware of, that we'd be creating history if we came back into this series and it's something that we desperately want to do."
Flintoff confirmed that England would not name their team until the morning of the match.
He said a lot of players had put in Test claims in warm-up matches over the past week and he wanted to see what the pitch looked like on the morning of the Test before making a final decision.
Flintoff said his ankle was holding up well and he had no concerns about bowling on it during the Test.