Tom Berenger does not have a scar, it was placed on his face as part of his character "Sergeant Barnes" in the 1986 movie Platoon. Sources suggest that this lifelike scar required three hours of makeup work every day of shooting.
Platoon was written and directed by Oliver Stone, who fought in Vietnam and who has tried to make a movie about the war. It was narrated by a young soldier Chris Taylor (Charlie Sheen), a college student who quits school to volunteer for the Army in the late '60s.
He's shipped off to Vietnam, where he serves with a culturally diverse group of fellow soldiers under two men who lead the platoon: Sgt. Barnes (Tom Berenger), whose facial scars are a mirror of the violence and corruption of his soul, and Sgt. Elias (Willem Dafoe), who maintains a Zen-like calm in the jungle and fights with both personal and moral courage even though he no longer believes in the war. Read more of the summary here.
The movie starred Charlie Sheen, Tom Berenger and Willem Dafoe. See full cast and crew at IMDb.
Check out tips on how to prevent, reduce or minimize scars at WebMD.
Speaking of scars, insights gleaned from salamanders may help keep people scar-free after surgery, University of Florida researchers say. They're focusing on a type of salamander called the axolotl, which can regenerate lost limbs and re-grow its own spinal cord. Find out more at Doctors Lounge.