Sgt. Charles “Chuck” Mawhinney spent almost a year and a half in Vietnam, but when he returned home to Oregon in 1969, he kept the details of his service a secret. No one outside a small circle of Marines he served with knew the truth: he was the deadliest sniper in Marine Corps history.
Mawhinney’s story went untold for two decades, but in 1991, friend and former Marine sniper Joseph Ward published a book that credited Mawhinney with 101 confirmed kills, a new record.
Ward’s book triggered an investigation into Marine Corps records, and it was found that the number he reported was incorrect. It turns out that Mawhinney actually had 103 confirmed kills. He also had another 216 “probable” kills.
With the release of Ward’s “Dear Mom: A Sniper’s Vietnam” and the end of Mawhinney’s quiet life of anonymity, this outstanding sharpshooter came out of the shadows and shared parts of his story publicly.
In one particularly intense engagement, Mawhinney put 16 bullets in 16 enemy troops in just thirty seconds, and he did it in the dark.
“I got 16 rounds off that night as fast as I could fire the weapon,” Mawhinney said in an interview for a documentary on Marine scout snipers. “Every one of them were headshots, dead center. I could see the bodies floating down the river.”
Vietnam, as it was for many, was hell for Mawhinney, but he extended his tour of duty because he knew he had the abilities to keep his fellow Marines alive.
One of the things that haunted Mawhinney after Vietnam was an enemy soldier that got away after an armorer had made adjustments to his rifle. He fired off multiple shots. All of them missed.
“It’s one of the few things that bother me about Vietnam,” he previously told The Los Angeles Times. “I can’t help thinking about how many people that he may have killed later, how many of my friends, how many Marines.”
Mawhinney left Vietnam after being diagnosed with combat fatigue. He is still alive, and his M40 rifle is on display in the National Museum of the Marine Corps.
The only US military sniper with more confirmed kills than Mawhinney in Vietnam was Army sharpshooter Adelbert Waldron with 109 confirmed kills.

