Richard Todd, the actor in question, was the first man to jump, and therefore the first man on the ground after Major Howard’s glider troops and the Pathfinders.
He had been appointed assistant Adjutant to the splendidly named Lt.Col. Geoffrey Pine-Coffin, C.O. of the 7th (Light Infantry) Parachute Battalion.
He seems to have been, like so many on that mission, a genuine hero, if a very modest one.
When he was making “The Longest Day”, Darryl Zanuck asked Todd to play himself, but he refused, believing that he would be made to look more heroic than he felt he had, in fact, been.
He subsequently played the part of Major Howard, with another actor playing himself when the two men met.
You can read his description of the jump and subsequent action here :
http://www.ornebridgehead.org/richard_todd.htm
One of his later roles was as Lachie McLachlan in “The Hasty Heart” starring opposite a future US President.
He also starred as Guy Gibson in “the Dam Busters” and as Lt. Cmdr. Kerans, RN, in “The Yangtze Incident”.
A brief extract from the above link, not directly by Todd,
During the 6th June, Lieutenant-Colonel Pine-Coffin and Lieutenant Todd were in the vicinity of Le Port when they happened upon members of No.25 Platoon of the 2nd Oxford & Bucks Light Infantry, who at that moment had come under attack from a machine gun position. Private Denis Edwards explains: “The stream of bullets ripped through the tree, inches above our heads, showering us with twigs and leaves. At that moment the 7th Para Battalion’s Commanding Officer, Lieutenant Colonel Pine-Coffin, accompanied by a young officer, appeared next to our tree, crouching to keep below the line of the machine-gun fire, and busily looked all around, taking in the picture. The two of them paused momentarily, glanced up at the splintered tree and the Colonel said to his companion, “That is not too healthy old boy. He’s firing just a shade too close for comfort. We had better deal with him, eh?” With Stens tucked under their arms, they wandered southwards in a leisurely manner and disappeared through a gap in a nearby hedge. A few moments later came the rat-a-tat tat of two Stens, followed by complete silence. Soon they reappeared with broad smiles upon their faces, looked towards us and the Colonel said, “Well lads, that’s fixed him up”… Years later I realized that the young Officer who had accompanied the Para Commander was Richard Todd…”