William Manchester made up most of his wartime record. When he did it, it was more difficult to verify military records than it is today. In doing so, he has tarnished what was his actual service and left us with no recourse but to question everything he wrote.
Forged his fake Navy Cross Citation.
Faked a Silver Star award.
Embellished his wartime experiences in Goodbye, Darkness.
Wrote his own commendation that appeared to be from a general.
Fabricated a combat injury.
Fabricated a Purple Heart award.
And so on.
Yes, he could write and write well. But I'm more likely look for historical truth in Steven King's offerings now.
He even lied about being valedictorian of his college class.