The waves crashing against the steel hull of the Higgins boat were not the only things churning in the stomach of First Lieutenant Frank Tachovsky. It was 8:44 A.M., June 15, 1944. Three hundred yards ahead lay the white sands of Saipan, an island fortress defended by 30,000 Japanese troops who had sworn to die before surrendering.

Frank was twenty-nine years old, a calm, steel-eyed officer from New Brighton, Pennsylvania. But the men crouching around him in the landing craft were not your typical Marines. They didn’t look like the poster boys for recruitment. They had black eyes, scarred knuckles, and records that listed offenses ranging from grand larceny to aggravated assault.

They were the “40 Thieves.” And they were Frank’s experiment.

Six months earlier, after the bloodbath at Tarawa where nearly a thousand Marines died in seventy-six hours due to poor intelligence, the Corps realized they needed a new kind of unit. They needed men who could slip behind enemy lines, map fortifications, kill silently, and vanish. They didn’t need soldiers who followed orders; they needed survivors who broke rules.

So, Frank went to the brig.

He didn’t look for the men who sat quietly in their cells. He looked for the brawlers. When two Marines got into a fight, Frank didn’t want the loser who went to the infirmary; he wanted the winner who went to solitary. He recruited a professional boxer, a former bodyguard for a Chicago gangster, and a host of thieves who could steal the tires off a jeep while it was moving.

“You have a choice,” Frank had told them. “Rot in here, or come with me and fight.”

They chose the fight. Now, as Japanese mortar shells began to walk across the water toward their boat, that choice was about to be tested.

“Lock and load!” Frank shouted over the roar of the engine and the explosions. “Remember your training. We go in fast. We go in deep. We don’t stop for anything.”

The ramp dropped.

The “40 Thieves” didn’t hesitate. They surged into the chest-deep water, rifles held high, moving with a predatory aggression that set them apart from the terrified infantry waves around them. Machine gun fire stitched the water, turning the surf red, but Frank’s men pushed through. By 9:30 A.M., while the rest of the invasion force was pinned down on the beach, the Thieves were already 300 yards inland, vanishing into the dense jungle.

They were alone. Forty men against an entire island.

The Pillbox

The heat in the jungle was suffocating, a wet blanket that smelled of rotting vegetation and sulfur. The platoon moved in a dispersed formation, fifty yards apart, communicating with hand signals Frank had developed during their training in Hawaii.

At 10:15 A.M., Sergeant Bill Kinupple, a man who moved through the underbrush with the silence of a ghost, froze. He raised a fist.

Frank moved up. Through the leaves, he saw it: a concrete pillbox built into the side of a ridge. It was a masterpiece of camouflage, covered in vines and moss. Inside, the dark snout of a Type 92 heavy machine gun was pointed not at them, but at the valley floor below—the exact route the Second Marine Division was scheduled to take that afternoon.

“If we leave it,” Kinupple whispered, “they’ll slaughter the main force.”

“And if we attack it,” Frank replied, “we give away our position.”

It was the classic dilemma of reconnaissance. But the Thieves weren’t just observers.

“Strombo,” Frank signaled.

Private Marvin Strombo crawled forward. He was carrying a bazooka, a weapon the platoon had practiced with until they could hit a moving target at 200 yards. But this target was a firing slit barely six inches wide.

Strombo positioned himself eighty yards away, hidden behind a fallen log. The rest of the platoon fanned out, their Springfields—fitted with eight-power Unertl scopes—trained on the pillbox.

At 10:32 A.M., Strombo squeezed the trigger.

Whoosh.

The rocket streaked across the clearing, a blur of smoke and fire. It threaded the needle, slamming directly into the pillbox’s firing slit.

BOOM.

The explosion was contained inside the concrete bunker. Smoke poured out of the vents. The Japanese crew of seven died instantly.

Before the smoke even cleared, the Thieves were moving again. They didn’t check for bodies. They didn’t celebrate. They faded back into the jungle, leaving only a smoking ruin to mark their passing. When the main Marine force advanced through the valley four hours later, they walked unscathed past a ridge that should have been a kill zone.

The Tank Attack

By late afternoon, the platoon had pushed two miles inland, far deeper than any other American unit. They had mapped seventeen Japanese positions, radioing coordinates back to the destroyers offshore. Every time they called in a strike, 5-inch shells would rain down minutes later, obliterating the targets.

But at 3:40 P.M., they found something that made Frank’s blood run cold.

In a grove north of Charan Kanoa, camouflaged under heavy netting, sat a staging area. Not for infantry. For tanks.

Frank raised his binoculars. Type 97 Chi-Ha medium tanks. He counted ten… twenty… thirty-seven.

Intelligence had estimated the Japanese had maybe a dozen tanks on the entire island. Frank was looking at an entire armored battalion, engines idling, crews checking their ammunition. And they were pointed west. Toward the beachhead.

“They’re going to counterattack tonight,” Frank realized. “They’ll hit the gap between the divisions.”

He radioed headquarters immediately. “Target spotted. Thirty-seven enemy tanks. Grid 44-Baker. Request immediate airstrike.”

The response was crackly and grim. “Negative, Tachovsky. Air assets are committed. Naval gunfire is supporting the beach. You are on your own.”

Frank looked at the tanks. He looked at his men. They had six bazookas and thirty-six rockets.

“We can’t fight a battalion,” Kinupple said, voicing what they were all thinking.

“We don’t have to fight them,” Frank said, his eyes narrowing. “We just have to mess them up.”

At dusk, the tanks began to move. A thousand Japanese infantrymen marched alongside them. It was a massive steel fist poised to crush the fragile American foothold.

Frank ordered his men to shadow the column. They ran parallel to the tanks, moving through the jungle, calling in updates.

“They’re turning North,” Frank radioed. “They’re flanking the Second Division.”

Suddenly, one of the Japanese tanks broke formation. It veered off the road, following a ravine that led directly toward a cluster of tents near the beach—the Regimental Command Post. Colonel Riseley, Frank’s commanding officer, was in those tents.

The tank commander had found a hole in the lines. If he reached the CP, he would decapitate the Marine leadership.

“Hodges!” Frank yelled.

Private Herbert Hodges was the best shot in the platoon. He grabbed his bazooka and sprinted after Frank. They raced through the darkening jungle, lungs burning, trying to cut off the tank.

They reached the edge of the ravine just as the tank rumbled into view below. It was 30 yards away. The commander was standing in the open hatch, scanning for targets with binoculars.

“Wait,” Frank whispered. “Let him get closer.”

The tank crawled forward. 20 yards. 15 yards.

The commander stopped the tank to check his map. The engine idled.

“Now.”

Hodges fired.

The rocket hit the tank just below the turret ring, the armor’s weakest point. The shaped charge burned through the steel and detonated the ammunition rack inside.

The explosion was cataclysmic. The turret was blown ten feet into the air. A fireball illuminated the jungle for hundreds of yards.

And then, the miracle happened.

The Japanese infantry moving with the main tank column saw the massive explosion. They assumed they had run into a heavy American defensive line. Panicked, the Japanese commanders ordered their tanks to turn away from the Command Post, diverting their attack into the teeth of the waiting Marine bazooka teams on the beach.

One shot. One tank. And Frank’s “criminals” had just misdirected an entire enemy offensive.

The Rescue

The next day, June 16th, the bill for their bravery came due.

The platoon was tired. They had been awake for 36 hours. But the radio crackled with a plea. Five Marines were trapped in a cave system a mile behind enemy lines. They were wounded, sick with dysentery, and pinned down.

“We go get them,” Frank said. It wasn’t a question.

A six-man team moved out. They found the trapped Marines in a box canyon, barely alive. One had malaria, burning with a fever of 103. Another could hardly walk.

“We have to carry them,” Frank said. “It’s going to be slow.”

They began the agonizing trek back. But their luck ran out.

At 1:23 P.M., they ran headlong into a Japanese patrol. Twenty soldiers.

“Ambush formation!” Frank hissed.

The Thieves slipped into the brush, forming an L-shape. They waited until the Japanese were in the kill zone.

“Fire!”

Eleven rifles opened up at once. It was a massacre. In seven seconds, the twenty Japanese soldiers were dead.

But the noise had alerted every enemy unit in the area. Whistles blew. Shouts echoed through the trees.

“Run!”

They sprinted, dragging the sick men. They reached the end of a ravine, only to find a nightmare: a dead end. A sheer rock wall blocked their path. Behind them, dozens of Japanese soldiers were pouring into the ravine, firing down at them.

They were trapped in a shooting gallery.

Bullets ricocheted off the rocks. A grenade exploded, spraying shrapnel.

“We’re done,” a private yelled, firing back desperately.

Frank scanned the wall. He saw water dripping from a crack in the rock, hidden behind a curtain of vines.

“There!” he pointed. “Check that fissure!”

Two men tore the vines away. It was a narrow opening, barely wide enough for a man.

“Go! Go! Go!”

They shoved the sick men through the hole. One by one, they squeezed into the darkness of the rock, dragging their packs behind them. Frank went last, firing a final magazine at the approaching Japanese before diving into the fissure.

The tunnel climbed steeply upward through the mountain. They crawled in pitch blackness, listening to the muffled shouts of the Japanese soldiers searching the empty canyon below.

Twenty minutes later, they emerged on the other side of the ridge, blinking in the sunlight. They were alive. They had vanished right in front of the enemy’s eyes.

The Bicycle Ride

The legend of the “40 Thieves” grew with every day. They were ghosts. They were demons. But their most audacious mission—the one that sounded too crazy to be true—happened in the ruins of Garapan.

Garapan was the island’s capital. It was a city of rubble, bombed into oblivion, but still teeming with Japanese troops. Marine intelligence needed to know if the enemy was digging in for a last stand in the city.

“I need eyes in there,” the Colonel said.

Frank looked at his men. “Who wants to go for a ride?”

Five of them volunteered. Frank, Strombo, Mullins, Irazi, and Evans. They stripped off their heavy gear. No canteens. No packs. Just rifles and knives.

They slipped into the outskirts of the city at 4:00 P.M. It was broad daylight. Japanese soldiers were everywhere—cooking rice over fires, cleaning weapons, moving supplies.

“Look,” Irazi whispered, pointing to a bombed-out storefront.

Leaning against the wall were five bicycles. Japanese military issue.

A wild idea formed in Frank’s mind. If they skulked around corners, they looked like sneaking enemies. But if they rode bikes? Who rides a bike in a war zone except someone who belongs there?

“Grab them,” Frank ordered.

The five Marines picked up the bicycles. They slung their rifles over their shoulders. And they began to pedal.

They rode right down the main street of Garapan.

It was surreal. Japanese soldiers looked up as they passed. Some waved. Some shouted greetings.

“Just wave back,” Frank murmured, raising a hand casually. “Smile, boys.”

For forty-three minutes, the 40 Thieves rode through the heart of the enemy stronghold. They counted machine gun nests. They marked supply dumps. They memorized the layout of the defenses. All while riding bicycles in the middle of an active war zone, surrounded by thousands of men who wanted to kill them.

They rode all the way to the northern edge of the city, ditched the bikes in a ditch, and melted back into the jungle.

When they returned to lines that night, the intelligence they brought back allowed the Marines to take Garapan days ahead of schedule.

The Legacy

By the time Saipan was declared secure on July 9th, the “40 Thieves” were battered. They had lost twelve men. Nine more were wounded. A casualty rate of over 50%.

They were gaunt, hollow-eyed, and suffering from tropical diseases. But they had done the impossible. They had proven that a small, highly trained unit of “troublemakers” could achieve more than an entire battalion.

Their tactics—silent movement, deep reconnaissance, independent operation—became the blueprint for future special forces. The Navy SEALs, the Marine Recon units, they all trace their DNA back to Frank Tachovsky’s experiment.

But when the war ended, Frank didn’t write a book. He didn’t go on a speaking tour. He went back to Wisconsin. He became the mayor of a small town called Sturgeon Bay. He raised a family.

He never told his children about the tanks. He never told them about the pillboxes. He never told them about the bicycle ride through hell.

Frank Tachovsky died in 2011. It was only then, when his son Joseph opened an old, locked footlocker in the attic, that the story came out. Inside were the photos, the maps, and the letters from the men—the “criminals”—who credited Frank with saving their lives.

They had been written off by society as thieves and thugs. But on an island in the Pacific, when the world was on fire, they proved that sometimes, the only people who can save the day are the ones crazy enough to break the rules.

THE END