Concerning Murphy's height, here is what I wrote in A Myth in Action
, "From 'Duel to Destry,' The Camelot Years: Retelling the Arthurian Legends Onscreen"
Oddly, the same Hollywood system that kept it a secret that Alan Ladd was only 5'6" did not go to any great lengths to enlighten the public that Audie Murphy was growing taller. In 1967, when Thomas B. Morgan visited the Murphy home for an interview, he was surprised to see that Murphy was of average height, “about 5'10"." Murphy explained to Morgan that he had continued growing after the war, during his early twenties. “Wouldn't you know," he joked. “It was that dern helmet holding me down all the time."
I don't think this is an either/or situation. There is evidence that indicates malnutrition can effect a growing child's height, and, until he entered the army, he couldn't afford to eat well or regularly. Added to that is the evidence that many people, especially young males, do not reach their full height until well into their twenties, and you have an explanation for the discrepancy.
As to his age, I tend to agree with the later date. I go with those who say Corrinne helped him to lie about his age so he could get away from those hopeless living conditions.
"He endured the shame of being sent home a living trophy to the blood and death of too many friends"A Myth in Action: The Heroic Life of Audie Murphyhttp://www.annjoiner.com