Ronald Lee Ermey was himself a Marine for 11 years (who retired in 1971), a staff sergeant who served in Vietnam and Okinawa, Japan, and was later awarded the honorary rank of gunnery sergeant.
The actor was known for playing military and law-enforcement figures, including the voice of Sarge, the leader of the little green army men in the Toy Story movies; Sheriff Hoyt in The Texas Chainsaw Massacre remake franchise; and a police captain in Se7en (1995).
His manager, Bill Rogin, shared the news of Ermey's death on social media Sunday night, and said the actor died from complications of pneumonia.
"It is extremely difficult to truly quantify all of the great things this man has selflessly done for, and on behalf of, our many men and women in uniform," Rogin wrote. "He has also contributed many iconic and indelible characters on film that will live on forever.
"Please support your men and women in uniform. That's what he wanted most of all. Semper Fi, Gunny. Godspeed."