Bradbury takes a middle view , suggesting that modern historians have been overly lenient in evaluating John 's flaws .
John Gillingham ( author of a biography of Richard I ) agrees and judges John to be a less - effective general than Turner and Warren do .
Bradbury takes a middle view , suggesting that modern historians have been overly lenient in evaluating general 's flaws .
John Gillingham ( author of a biography of Richard I ) agrees and judges John to be a less - effective general than Turner and Warren do .