Hue, February, 1968. The old Imperial capital is on fire. House to house, room to room, the Marines of the First Marine Division are fighting the worst urban battle of the entire war. The range is not measured in yards, it’s measured in feet. A doorway, a staircase, a hole punched through a garden wall.
Men d.i.e at distances you could cross with one step, and the most modern rifle in the American arsenal, the M-16, is jamming, failing, in some cases dying in the hands of the men who carry it. So, in the rubble, some of those Marines are reaching down and picking up a gun the United States military had already thrown in the trash, a gun designed in the 1920s, a gangster’s gun, a relic of Normandy in the Pacific, declared obsolete in 1957, 11 years before these men ever set foot in Vietnam. The Thompson submachine gun.
So, a question hangs over the whole war. Why would elite American sold.i.ers reach past the future and pick up the past? The men who carried it had an answer. They said the Thompson hit like nothing else in the jungle. They said the heavy 45 didn’t deflect off the vines and the bamboo the way the little M-16 round did.
They said that when an ambush erupted at 10 yd, a Thompson wasn’t a rifle, it was a buzzsaw, something that chopped through the brush and knocked a man flat. Captain Dale Dye of the Marine Corps found one in the wreckage and carried it into the fight for exactly that reason. The big, slow 45, in his words, tended to do a lot of damage. Some of that is true.
Some of it is a myth that grew in the dark, fed by gangster movies and dead men’s stories. This is about which is which. Before it was a Vietnam gun, it was an American nightmare. The Thompson was invented by a US Army general, John T. Thompson, who wanted a one-man trench broom to sweep out the enemy lines of the First World War.
The war ended before it was ready, so the gun went looking for another home, and it found one in Prohibition-era Chicago, the Tommy gun, the Chicago typewriter, the chopper. Bootleggers and bank robbers turned it into the most famous gun in the world. Then the Second World War made it a hero. Colt had built the first 15,000 back in 1921, and by 1945 nearly 1.
7 million Thompsons had been made and carried from the hedgerows of France to the jungles of the Pacific. By the time it reached Vietnam, the historian Tom Lemlein said it best. The gun’s reputation arrived before the gun did. But here’s what most people never realize. The Thompson was already in Vietnam before the Americans got there.
In the First Indochina War, the Viet Minh used Thompsons taken from the French and shipped in by their communist Chinese allies out of leftover wartime stocks. The gun had been killing in those same rice padd.i.es for 15 years before the first American advisor arrived. Then, in late 1961, President Kennedy widened the war.
Crates of Thompsons were shipped to the South Vietnamese army. And something strange happened. The Vietnamese didn’t want them. The gun was too heavy. At a hair over 10 and a half pounds empty, 11 loaded, it was brutal on a small-statured sold.i.er humping it through the bush all day. One CIA field agent told Lemlein that his team got so tired of the South Vietnamese rejecting the things that in 1962, they buried several cases of brand new Thompsons in the ground north of Saigon, just to keep them out of enemy hands. That’s how the war started for
the Tommy gun. Buried in the dirt, unwanted. So how did it end up in the hands of America’s most elite sold.i.ers? The answer is in the numbers. The M-16 fired a tiny 5.56 mm bullet screaming out of the barrel at around 3,250 ft per second. Light, fast, modern. The Thompson fired a fat .45 caliber round at about 920 ft per second, slower than the speed of sound.
A slow, heavy hammer. And in Vietnam the killing was almost always close, ambushes inside 25 yards, often inside 10. In that world you did not need a rifle that could reach out a quarter mile. You needed something that put a man down the instant the shooting started and put down whoever was standing behind him. A few hard men decided the old hammer was exactly that.
To understand why you have to understand what was happening to the new rifle. April and May 1967, the hill fights near Khe San, Hill 881. Marines of the 3rd Marine Division assaulted dug-in North Vietnamese regulars carrying brand new M-16s. The rifles jammed. Spent brass welded itself into the chambers.
The bolt wouldn’t strip a fresh round. And these men had been issued the rifle with no cleaning kits, told it was self-cleaning, a lie that read like a d.e.a.t.h sentence once the firing started. Marines d.i.ed on that hillside trying to clear jams the only way they could, by ramming a steel cleaning rod down the barrel under fire to punch the stuck casing out by hand.
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Congress investigated. The I-Cord Committee found that the Army had quietly switched the rifles gunpowder to a cheaper formula that fouled the action, had skipped the chrome lining that would have stopped the corrosion, and had sent the guns out without kits or training. Its 51-page report said the failure to fix the ammunition borders on criminal negligence.
That is the real horror behind the legend, not the Thompson, the thing the Thompson stood next to, and the enemy made it worse on purpose. The Viet Cong and the North Vietnamese had a tactic they called hugging the belt. They would close the distance until they were almost on top of the Americans, 15 yards, 10 yards, close enough that American artillery and air power couldn’t fire without killing their own men.
They forced every fight into a knife range brawl. In a brawl like that, a jam isn’t an inconvenience. It’s the end. So, picture the math through a sold.i.er’s eyes. Your rifle might betray you at the exact second the enemy is closest, or you can carry a heavy, ugly 25-year-old gun that has never once let a man down. Some of them made their choice.
The clearest of them was a SOG man. MACV-SOG ran the most dangerous missions of the war. Small teams slipping across the borders into Laos and Cambodia, places the United States swore it had no sold.i.ers. SOG kept a secret armory of untraceable weapons, and that meant a man could carry whatever he trusted. First Sergeant Lionel Chu Chu Pin carried a Thompson.
Pin was Osage and Micmac, a veteran of the Alamo Scouts in the Pacific, a ranger, a man who fought in three wars and earned the Combat Infantryman Badge three times. He had loved the Thompson against the Japanese, and decades later, on cross-border recon against the North Vietnamese Army, he proudly packed an M1A1 Thompson into the most secret jungle on Earth. A prohibition gun.
In a war that hadn’t been born when it was built. But honesty matters here, and so does the dossier. Even in SOG, the Thompson was the exception, not the rule. Most SOG recon men carried chopped-down CAR-15s, sawed-off machine guns, and suppressed weapons. Pin carried his Tommy gun because he loved it, not because it was standard.
There were others. Bob Scherez, a Special Forces sold.i.er on Team A-432 in 1963, training Jarai Montagnard fighters, called the Thompson the best gun in the camp for one job, base defense. When the wire got probed in the dark, he wanted the .45’s knockdown power on the perimeter. A helicopter door gunner got one off some South Vietnamese troops, sawed the stock off to shrink it, and kept it as a bug-out gun, something to grab if his aircraft went down. It went down twice.
And out on the gray water edge of the war, ordinary navy sailors carried Thompsons on market time patrols, boarding junks and sampans along the coast, searching for smuggled weapons with a gangster gun slung over the shoulder. But now we come to the unit you’d expect to be at the center of this story. And they’re the proof that the legend got out ahead of the truth, the Navy SEALs.
The popular telling says the SEALs begged for the Thompson. They didn’t. The one outfit you’d most expect to fall in love with a hard-hitting close-quarters gun looked at the Thompson and turned it down. They carried the Stoner 63, the Swedish K, the Smith & Wesson M76, and shotguns. Their own assessment rated the Swedish K’s reliability preferable to the US Thompson or M3 submachine gun.
The men whose entire job was close, wet, point-blank killing rejected the relic. That tells you something. So let’s finally put the legend on trial, the buzzsaw. The claim that the big 45 chopped through the jungle while the M16’s little bullet bounced off the vines. The physics has a kernel of truth in it.
A heavy, slow, blunt round does deflect off brush less than a light, fast, pointed one. That much is real. But decades of ballistic testing all say the same thing. There is no such thing as a true brush-busting bullet. Every projectile, every single one, destabilizes and tumbles when it clips wood or bamboo. Less deflection is not no deflection.
The 45 was a slightly better bet through cover. It was never a chainsaw. And the man who kills the legend dead was a man who was actually there. Gordon Rottman fought in the 5th Special Forces Group, and he later became one of the most respected weapons writers alive. He saw only a couple of Thompsons in all of Vietnam.
He found them scarce and unpopular, heavy, complex, hard to control. And among their main faults, he listed this in plain words, poor penetration through dense bamboo. The legend says it chopped through the brush. The man holding it in the brush says it didn’t. There’s an even sharper irony. The story always frames the Thompson as the gun the enemy feared, but the enemy didn’t fear it.
The enemy loved it. The Viet Cong used captured Thompsons and even built crude copies of their own in hidden jungle workshops. A weapon both sides prized cannot be the thing one side dreaded. So, here is the honest verdict. At 10 yards against a human being, a .45 slug out of a Thompson was devastating. That part of the legend is true, and it’s true enough to have kept the gun alive long past its expiration date.
Chopping down the jungle itself? That part is the movies. The truth is smaller than the myth. It’s also the only version that survives contact with the men who were really there. But the idea underneath the legend, a heavy reliable submachine gun saving lives the moment the primary weapon fails, that idea is real. To see it proven, you have to leave the American story and cross over to the Australian.
Their gun was the Owen, Australian designed, 9-mm a magazine that fed from the top, so gravity helped it and brush couldn’t snag it, with an ejection port on the bottom that drained out water and mud. They called it the digger’s darling. In a 1941 torture test, sold.i.ers dunked it in mud and choked it with sand, and it kept firing while a Sten and a Thompson tested right beside it both quit on the spot.
The Owen was everything the Thompson’s legend claimed to be. The difference is that the Owen actually was it. And it had its day at a place called Long Tan. August 18th, 1966, Phuoc Tuy province, a rubber plantation in a monsoon downpour. D company of the 6th battalion, Royal Australian Regiment, 108 men plus three New Zealand artillery observers, walked into an enemy force estimated between 1,500 and 2,500 strong, the 275th Regiment and the D445 Battalion.
The Australians were outnumbered more than 10 to 1 in the rain with the radios half drowned. They held. When it was over, 18 Australians were dead and 24 were wounded. At least 245 enemy bod.i.es were counted on the ground. And in the middle of it, the legend came true. Corporal John Carter’s .50 caliber machine gun jammed on top of his armored carrier with the enemy almost on him.
A recoilless rifle crew 15 to 20 m away. So, he picked up his Owen gun and killed two of them at point-blank range and wiped the crew out before they could fire. Nearby, a private named William McCall, they called him Yank, killed two more enemy with his Owen while carrying a replacement radio through the worst of the fire.
A reliable submachine gun up close in the rain the instant the big weapon failed. That is the entire thesis of the Thompson legend finally proven true, just not by the Thompson. And not by the Americans, by an Australian with an Owen at Long Tan. The Thompson’s Vietnam story was never a story of great battles.
It was a story of scattered stubborn choices. A SOG sergeant who loved his old gun. A Marine in the rubble of Hue. A Green Beret on a Montagnard wire at midnight. A door gunner with a sawed-off stock and a fear of crashing. It was one of the last times a Second World War submachine gun walked into front-line American combat.
A bridge running from Prohibition Chicago through the hedgerows of Normandy all the way into the jungles of Southeast Asia before the cheaper M3 Grease Gun and the modern rifles finally retired it for good. And maybe that’s the real reason the legend grew so large. Not because the Thompson chopped down the jungle. It didn’t.
Because it didn’t quit. In a war where the newest and most expensive rifle on earth jammed and killed the men holding it, a heavy, obsolete, ugly old gun from another generation simply worked. Sometimes the future fails you in the mud, and a sold.i.er reaches back 40 years to find something he can trust.
Disclaimer : This content may be created by AI for entertainment purposes. Any resemblance to real persons, events, or places is coincidental.
